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Best tools for creating AI Agents

June 12, 2024
8 min

Estimated reading time: 13 minutes

What would it be like if you could create agents AI without being a programming expert? What if I told you that No-Code tools are making this possible, making life easier for those who are not from the technical field?

That's right, you don't need to be a programmer to enter the world of AI.

In this article, we’ll dive into the fascinating world of AI agents and show you how you can use them, even without advanced technical knowledge.

We will explore tools that are friendly to both beginners and more experienced professionals. In addition, we will highlight the crucial differences between AI agents and chatbots, helping you choose the best option for your project.

Get ready to discover how to boost your initiatives with cutting-edge technology, in a simple and effective way. Are you curious? Keep reading and learn all about this exciting topic.

Melhores ferramentas para criar Agentes de IA (sem programar)

Categories of No-Code Tools for AI

Building artificial intelligence (AI) agents has become easier with the advancement of No-Code tools.

These tools are ideal for those who do not have in-depth technical knowledge in programming, but want to create an innovative product. Let's understand how these tools can be useful and accessible.

Natural Language Processing (NLP) Tools

They are essential for AI agents to understand and react to human language.

With these tools, you can build systems that interact with and understand users in a natural way. Imagine building a virtual assistant that answers frequently asked questions from customers, like Chatbase or using GPT-4o, OpenAI’s latest model.

GPT-4o is free and offers multimodal capabilities, allowing interactions via text, voice and image, providing more efficient and humanized customer service.

Conversation Flow Development Tools

What is the best automation tool for WhatsApp?

Easy and Intuitive (Ideal for Beginners)

ManyChat: It offers an intuitive interface with a drag-and-drop visual editor, ideal for beginners. It allows you to create chatbots for Facebook Messenger, WhatsApp, SMS and email. It has a free plan with basic features and paid plans starting at US$$ 15/month.

Landbot: Visual platform that allows you to create chatbots for web, WhatsApp and Facebook Messenger. It offers ready-made templates and conditional logic. It has a free plan with 100 chats/month and paid plans starting at €40/month.

Wati: Specialized in automation for WhatsApp, it allows you to create chatbots without code with intuitive logical flows. Offers a 7-day free trial.

Moderately Intuitive (Requires Some Experience)

Chatfuel: Allows you to create chatbots for Facebook Messenger, WhatsApp and Instagram. Offers ready-made templates and AI integration. Has a free plan with limited features and paid plans starting at US$$15/month.

HubSpot Chatbot Builder: Integrated with HubSpot CRM, it allows you to create chatbots for lead qualification and customer service. It offers a free plan with basic features and paid plans with advanced functionalities.

Advanced (Recommended for Users with Technical Experience)

Botpress: Open source platform that allows you to create highly customizable chatbots. Requires technical knowledge for configuration and implementation. It has a free plan with basic features and paid plans with advanced features.

Voiceflow: Focused on creating voice assistants and complex chatbots, it offers a visual interface for designing conversation flows. It has a free plan with limited features and paid plans for advanced features.

Custom AI Model Generation Platforms

Best tools for creating AI Agents

These platforms allow you to create AI models that are specifically tailored to the needs of your project.

For example, with services like Azure Machine Learning or Google AutoML, you can train models to predict market trends or consumer behaviors without being a data expert.

Using No-Code tools to develop AI agents not only saves time, but also democratizes the technology.

Choosing the right tool can be a game changer for your project or business. That’s why it’s important to understand what each one offers and how it can align with your goals.

This flexibility and accessibility are the great advantages of No-Code tools in the digital age.

Langchain: A Core Tool for AI Agents

Artificial intelligence (AI) is changing the way we interact with technology.

Today, with No Code platforms, you don’t need to be a developer to create an intelligent agent. These tools simplify the process, making it accessible to everyone.

One of the most interesting tools is the Lang Chain. It allows anyone build a chatbot without having to write code.

This is great for small businesses or anyone who just wants to automate social media responses.

Other popular tools like Dante, Zia, Defy, and Synthflow are also popular. They offer a variety of features that can help everyone from the casual user to the most experienced developer.

For example, Dante is perfect for beginners who want to create something simple quickly.

Specifically speaking about chatbots, tools like Type bot, ManyChat, Botpress, Voice Flow, and Laila stand out. They allow you to create bots that not only respond automatically, but also learn and adapt over time.

Imagine having a virtual assistant that learns from conversations and improves with each interaction. This is possible with these tools!

It is important to understand the difference between a simple chatbot and a more sophisticated artificial intelligence agent.

Choosing the right tool can significantly impact quality and efficiency of your project. A good intelligent agent can save time, reduce costs and improve user experience.

So if you are thinking about creating your own intelligent agent, consider your needs and choose the right tool. The possibilities are vast and the tools are within everyone’s reach.

With a little creativity and the right platforms, you can transform the way you interact with your customers or followers.

Specific Tools for creating AI Agents

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Choosing the right tools to create artificial intelligence agents can make all the difference in your project.

Here are some of the best platforms that can help both beginners and experienced professionals to develop smart solutions effectively:

Dante – Ideal for Beginners: If you're starting out and want to experiment with creating AI agents, Dante is a great choice. It has an easy-to-use interface and comes with several ready-made settings, which greatly simplifies the development process.
Zaia – Continuous Learning: This platform is known for truly understanding user needs. With Zaia, each interaction helps to improve responses and recommendations, thanks to its continuous learning system, becoming increasingly accurate and useful.
Chatvol t – Ideal for companies looking for efficient service adapted to their data, Chatvolt uses advanced models such as ChatGPT and 39 other LLMs to reduce operational costs and optimize the customer experience with highly customizable AI agents.
Dify – Predicative Analysis: For more complex projects that require predictive analysis and process optimization, Dify is the right choice. It offers advanced machine learning and data integration tools, enabling you to create agents that can predict trends and optimize operations.
Synthflow – Focus on Interaction: If your project needs an agent that interacts naturally with users, Synthflow is ideal. It combines natural language processing with conversational flow creation, creating an engaging and dynamic user experience.

These tools were chosen because they offer varied and adaptable solutions, depending on the needs of each project.

Choosing the correct tool is crucial to the success of your AI agent, as each has distinct characteristics that can benefit different types of projects. For example, if you need something simple and easy to use, go with Dante.

For continuous learning and adaptation needs, Zaia or Chatvolt may be the best option. Remember that a good project starts with the right choice of tools!

AI Agents versus Chatbots: Understand the Differences

Understanding the difference between chatbots and AI agents can help you better choose the technology for your project. Let's simplify this!

You chatbots are like automated attendants that follow a script. They are great for simple tasks like answering frequently asked questions or scheduling an appointment.

Imagine you ask a chatbot about a store’s opening hours, and it promptly responds with the programmed information.

Already the AI agents are more like intelligent personal assistants. They learn from each interaction and improve their responses over time.

If you are looking for a more personalized experience, where the system recognizes your tastes and preferences, an AI agent is the best option.

For example, while a chatbot might give you a standard answer about a cake recipe, an AI agent might suggest adjustments to the recipe based on what it learned about your past preferences or dietary restrictions. This shows how AI agents can be more adaptable and personable.

If your goal is simply to provide information or answer simple questions, a chatbot may be sufficient. But if you’re looking to offer a unique and tailored experience for each user, an AI agent may be the best choice.

Evaluate your needs and see which technology best fits to offer the best service to your users.

Remember, the choice between a chatbot and an AI agent can define your user's level of satisfaction with the interaction. Choose the technology that best suits your objective and offers a remarkable and efficient experience.

Software Architecture: Building Intelligent Applications

When it comes to building artificial intelligence (AI) applications, the software architecture is the foundation that holds everything together. It’s like the skeleton of a building: if it’s not well designed, the building won’t stand up.

For an AI agent to function well, it needs a framework that supports it efficiently, ensuring not only its functioning now, but also its future evolution.

There are some key points you need to consider when designing this architecture:

Data Organization: Imagine that data is the fuel for your AI agent. If this fuel is not well organized, the agent will not be able to perform well. A well-structured database allows the agent to quickly find what they need, making the entire process more agile and efficient.
Clear Processes: It is essential to have a clear vision of how each agent process will work, from data collection to user interaction. This helps avoid mistakes and ensures that the agent always knows what to do in each situation.
Integration with Other Services: These days, an AI agent rarely works alone. It needs to communicate with other applications and services. A flexible architecture facilitates this integration, allowing your agent to adapt and use resources from other systems to improve its performance.
Choice of Algorithms: Algorithms are the heart of your AI agent. Choosing the most appropriate ones and implementing them correctly is essential so that your agent can learn and adapt over time, improving their accuracy and efficiency.

In addition to these elements, it is important to think about the scalability and adaptability of your architecture. This means designing with not only current needs in mind, but also future ones.

An AI agent that can grow and adapt over time is much more valuable, as it can continue to be useful as new technologies and requirements emerge.

Therefore, a well-planned architecture is not just a technical detail; it is what allows your AI application to actually deliver results and stay relevant in the market.

Investing time and resources in this foundation will save you a lot of headaches and ensure that your AI project is a success.

Revolutionizing Software Creation with AI

How AI is being used in software development

In this article, we explore how artificial intelligence is changing the way we create softwares, especially with the help of No-Code tools.

You saw the difference between AI agents and chatbots, discovered tools to develop agents without having to code, and understood the importance of the software architecture.

Now, with this knowledge, you can bring your ideas to life, creating smarter and more efficient projects.

Ready to use what you learned?

No-code tools not only simplify the creation of AI agents, they also open the door to endless innovation.

You don't need to be a programming expert to bring your ideas to the digital world.

Now that you have the knowledge and tools, how about starting to create? No-Code technology is here to make your work easier and expand your possibilities.

With NoCode StartUp, you have everything you need to turn your ideas into reality. Enter our course NocodeIA and learn how to use the best in the world Nocode with Artificial Intelligence.

Further reading:

How to make an AI Agent trained with my data

Also visit our Youtube channel

Learn how to create AI Applications, Agents and Automations without having to code

More Articles from No-Code Start-Up:

Matheus Castelo

AI Agent for Purchasing: How Artificial Intelligence Can Optimize Your Procurement

The use of a AI agent for shopping is becoming a strategic necessity for e-commerce companies, purchasing managers and technology and innovation professionals.

This technology makes it possible to automate processes, reduce costs and improve strategic decisions in corporate acquisitions.

Want to understand in detail how these autonomous AI agents work in practice? Check out this detailed article from SAP, which provides concrete examples of how agents select suppliers and generate orders automatically: What are AI agents?.

What is an AI agent for shopping

What is an AI agent for shopping?

An AI agent for procurement is an advanced software designed to automate and optimize processes related to the procurement of goods and services.

It combines artificial intelligence, machine learning, and automation to perform tasks that would normally be done manually.

These agents can act as a virtual assistant for e-commerce, recommending products and facilitating recurring purchases.

Furthermore, they function as a AI chatbot for product recommendation, offering real-time support to managers and internal teams.

How does the application of AI in the purchasing process work?

The application of AI in purchasing mainly involves the automatic collection and analysis of large volumes of data, including purchasing history, supplier behavior, market prices and internal demands.

Want to better understand how these technologies help reduce costs and make more efficient decisions in practice? Check out real examples in IBM's detailed article on How AI optimizes processes in the purchasing sector.

Using this data, the agent suggests ideal suppliers, automatically negotiates better prices, and generates personalized recommendations for new purchases. In addition, it can anticipate future demands and avoid stock shortages, always maintaining ideal supply levels.

Advantages and benefits for companies

Advantages and benefits for companies

Implementing an AI agent brings measurable benefits to organizations:

Cost reduction

Companies report reductions of up to 25% in procurement-related operational costs after implementing intelligent agents. This is due to the automation of manual processes and improved negotiation capabilities through data analysis.

Increased productivity

Intelligent agents reduce time spent on repetitive tasks, allowing teams to focus on strategic activities, increasing productivity by up to 35%. See more details in the article Tips on the benefits of AI in Procurement.

Better strategic decisions

With AI technology to optimize purchasing decisions, companies can make more assertive decisions, based on predictive analysis and historical behavior.

Greater compliance

AI agents also help with compliance by ensuring that all acquisitions follow internal standards and policies, reducing audit risks and fines.

Practical examples and use cases

A retail chain adopted an AI agent to monitor inventory in real time, allowing them to predict demand more accurately. This reduced stockouts and saved thousands of dollars annually.

In the pharmaceutical sector, AI agents automate the renewal of contracts and recurring orders, speeding up administrative processes and reducing manual errors.

Another successful application is in large e-commerces, where agents act by automatically recommending products to customers based on history and preferences, boosting sales.

Want to see how companies like Zara and Coca-Cola are applying AI to their purchasing operations and achieving great results? Read this full report on the DataCamp blog.

Future trends and integration with other technologies

Future trends and integration with other technologies

The future of AI agents for purchasing is highly integrated with other emerging technologies. They already connect to ERP systems, automation platforms such as n8n, Make and generative AI tools such as Dify.

The trend is for these agents to become increasingly personalized and autonomous, creating specific solutions for each company and sector.

This integration promises to make purchasing operations even more efficient and free of bottlenecks. Learn more about trends in Electronic Market.

AI Agent FAQs

How to use AI in the purchasing sector?

To use AI, simply implement an agent connected to the company's current systems, such as ERP and CRM, and allow it to learn from the data.

With this, it can automate purchases, manage suppliers and recommend strategic decisions automatically.

How much does an AI agent earn?

The term “AI agent” refers to the technology, not a specific professional. However, managers who operate these solutions can earn salaries ranging from R$14,000 to R$14,000, depending on their level of experience and responsibility.

What AI agents are there?

The main types are:

Shopping: Automate tasks such as quotation, supplier selection, order generation and inventory control. These agents optimize time and reduce errors in purchasing decisions.
Customer service: responsible for interacting with consumers via chat, voice or email, offering automated support, resolving queries and speeding up service based on the user's history and intention.
Human Resources: They assist in processes such as CV screening, interview scheduling, performance analysis and organizational climate management, promoting greater agility and efficiency in the sector.
Financial management: perform tasks such as bank reconciliation, cash flow forecasting, automatic expense classification and budget control, offering greater precision and agility in corporate finance management.
Customer onboarding: They work on the automated reception of new customers, guiding them through initial processes, such as registration, account activation, explanations about products or services and integration with platforms, ensuring a fluid and fast experience from the first contact.

How much does an AI agent cost?

The cost of implementing an AI agent can vary significantly based on the complexity of the solution and the integrations required.

Popular SaaS platforms like IBM Watson or Pipefy offer plans starting at R$200 per user per month.

Highly customized projects, involving integrations with ERPs, CRMs and intensive use of generative AI, can easily exceed R$20 thousand per month.

If you want an economical and efficient alternative, consider investing in your own training.

NoCode Startup's specialized training teaches you how to develop your own AI agents to automate purchasing processes, customize flows and save money with tailored solutions. Find out how to become an AI Agent Manager here.

Why Your Business Needs an AI Agent Now

In a scenario where efficiency, speed and assertiveness are increasingly required in purchasing areas, having an AI agent is no longer a differentiator but has become a strategic pillar.

This technology transforms the way your company negotiates, anticipates demands and makes critical decisions.

June 25, 2025
5 min

Matheus Castelo

AI for Educators: Tools and Agents That Are Redefining the Classroom

The digital revolution has arrived in full force in the classroom — and now, artificial intelligence (AI) is at the center of this movement. With the growing demand for effective solutions, AI for educators has become one of the most promising areas of educational innovation.

Educators who master these tools not only save time, but can also offer more personalized and effective learning experiences. But after all, what is the best AI for teachers? How can it be applied in everyday school life without complications? And most importantly: how does it directly benefit students?

In this article, you’ll discover the key AI technologies, tools, and agents that are transforming the education landscape — plus practical recommendations you can apply right now.

What is AI in education and why should you, as an educator, understand it?

Artificial intelligence in education refers to the use of algorithms and intelligent agents to facilitate, personalize, or automate teaching and learning tasks. This includes everything from creating lesson plans to monitoring student performance in real time.

AI tools enable:

Reduce time spent on administrative tasks;
Customize activities according to each student’s profile;
Create assessments and interactive content automatically;
Optimize pedagogical planning and classroom management.

Meet the: Agents with OpenAI Course by No Code Start Up

How does AI help teachers in practice?

How AI helps teachers in practice

AI helps educators on multiple fronts:

Lesson planning: Tools like Canva Magic Write and Curipod are transforming the way educators prepare their lessons. Instead of starting from scratch, simply input a topic or objective and these tools generate a complete teaching structure — with an introduction, development, interactive exercises and conclusion.

This allows for more efficient preparation, saving hours of work. In addition, these resources ensure alignment with curricular guidelines, such as the BNCC, and offer visual and methodological suggestions adapted to the class profile.

Personalization is one of the biggest benefits: the teacher can easily adjust the suggestions to the reality of the classroom and the students' learning level.
Content creation: Generative agents such as ChatGPT, Claude and Eduaide.Ai allow teachers to develop a wide range of pedagogical content quickly and efficiently.

With just a few commands, you can generate explanatory texts on any subject, create thematic summaries, build interactive quizzes with automatic feedback and even script visual presentations for use in the classroom or in remote teaching.

Assessment automation: Correcting and preparing assessments has always required time and attention from teachers — but with the use of AI-based tools, this process becomes much more agile and reliable.

Platforms like Gradescope allow you to upload scanned tests and apply previously defined correction criteria, generating instant results with a high degree of accuracy.

Tools such as ChatGPT can help create essay questions, multiple choice questions or even gamified assessments, based on curricular themes provided by the teacher.
Personalized mentoring: Artificial intelligence enables a much more individualized approach to teaching. By analyzing data on student performance, participation, and behavior, AI tools can identify patterns and learning gaps that would otherwise go unnoticed.

Based on these insights, teachers can provide personalized feedback, propose specific activities for reinforcement, and even adapt the pace and teaching approach according to the needs of each student.

This strengthens the pedagogical bond, increases student engagement and significantly improves academic results — making the learning experience more fair, human and effective.

Types of Artificial Intelligence used in Education

Types of Artificial Intelligence used in Education

Generative AI

Tools like ChatGPT, Claude, and Dify are capable of generating textual and multimodal content (such as images and videos) on demand. They can be used to plan lessons, create teaching materials, or provide alternative explanations for tutoring.

Analytical AI

Solutions like Google Classroom with AI, MagicSchool.ai and ClassDojo monitor student interactions and performance to adapt pedagogical strategies in a personalized way.

Autonomous Educational Agents

Educators can create agents with n8n or Dify to automate tasks like reporting, performance alerts, activity delivery, and more.

AI Agents: The Future of Personalized Education

You Autonomous Agents with AI represent the next level of pedagogical innovation. They are capable of operating continuously and adaptively based on predefined commands and contextual logic.

Usage examples:

Tutor agent to answer students' questions via WhatsApp or Plurall;
Evaluation agent to generate reports per student based on performance on educational platforms;
Content agent who generates new material every week based on the school's curriculum.

Find out more at No Code Start Up AI Agent Manager Training

AI Tools Every Educator Needs to Know

Curipod

O Curipod is a platform that allows you to create interactive classes in just a few minutes with AI support. Teachers can enter a topic and automatically receive a class structure with texts, quizzes, polls, images and other activities. It is ideal for those looking for dynamism and more engaging interactions in the classroom.

Curipod

Canva Magic Write

Integrated with Canva, Magic Write is an AI-powered content generator that helps educators create slides, presentations, summaries, and visual materials in record time. Simply input an idea or topic, and the tool suggests cohesive texts that are visually ready for educational use.

Canva Magic Write

AudioPen

AudioPen automatically converts speech into text, making it ideal for educators who prefer to dictate ideas rather than type. It can be used to create lesson plans, video scripts, educational blog content, and more. It's simple, practical, and fast.

AudioPen

Eduaide.Ai

This tool offers over 100 resources for creating high-quality educational content. From complete lesson plans, study suggestions, personalized feedback to active methodologies — all generated with AI and available in multiple languages. Learn more about Eduardo.AI

Eduaide.Ai

MagicSchool.ai

Platform aimed exclusively at educators, the MagicSchool.ai centralizes the generation of lesson plans, performance reports, quizzes and various content. A true all-in-one dashboard for those who want to increase productivity in pedagogical management.

MagicSchool.ai

Copilot for Education (Microsoft)

O Copilot integrates with Microsoft 365, allowing teachers to automate content creation and administrative tasks. From responding to emails to creating presentations with AI, it is a powerful ally to optimize time in and out of the classroom.

Copilot for Education (Microsoft)

Dify + OpenAI

Ideal for those who want to customize their own educational agents. With Dify, you connect models of the OpenAI into practical workflows — like an agent to review essays, another to grade tests, or even a bot to support students’ parents.

Dify + OpenAI

Read also: FlutterFlow Course for Educational Apps

Automation of pedagogical tasks: more time to teach

Tasks such as providing feedback, organizing data, sending notifications, and even correcting tests can be automated. This allows teachers to focus on human interactions, creativity, and close monitoring of students.

Solutions like Make Course (Integromat) and Xano Course can be integrated with teaching platforms to facilitate these processes.

AI FAQs for Educators

What is the best AI for teachers?

There is no single answer, as it depends on the objective. For content creation, ChatGPT and Eduaide.Ai stand out. For lesson planning, Curipod offers a ready-made structure.

For assessment, Gradescope and MagicSchool.ai are good choices. The ideal is to combine tools according to the pedagogical need.

What are the types of AI used in education?

The main types are:

Generative AI (such as ChatGPT and Dify), used to create texts, activities and even videos;
Analytical AI, which interprets student performance and behavior data;
Autonomous agents, who perform educational tasks without constant supervision, such as correcting tests or sending feedback.

What is the best AI website for teachers?

Platforms such as MagicSchool.ai, Eduaide.Ai and Canva Magic Write offer robust solutions for teachers. In the Brazilian ecosystem, No Code Start Up stands out with practical training focused on AI applied to education.

How can AI help teachers?

It helps by automating repetitive tasks, creating personalized content, offering real-time data analysis, and enabling more efficient classroom management. This frees up time and significantly improves the quality of teaching.

AI for Educators is a One-Way Road – And You Need to Be Prepared

AI in education is more than a trend — it’s a transformative reality. Educators who learn to integrate these technologies into their daily lives save time, increase the impact of their work, and improve the quality of teaching.

June 20, 2025
7 min

Neto Camarano

LlamaIndex: What It Is, How It Works, and How to Use It with LLMs Like ChatGPT

LlamaIndex is an open-source framework designed to connect large language models (LLMs) to private, up-to-date data that is not directly available in the models' training data.

The definition of LlamaIndex revolves around its function as middleware between the language model and structured and unstructured data sources. You can access the official documentation to get a detailed view of its technical features.

LlamaIndex and what it is for

LlamaIndex what is it for?

Integration with LLMs

LlamaIndex is a tool developed to facilitate integration between large language models (LLMs) and external data sources that are not directly accessible to the model during response generation.

This integration occurs through the paradigm known as RAG (Retrieval-Augmented Generation), which combines data retrieval techniques with natural language generation.

Practical applications

The simple explanation of LlamaIndex lies in its usefulness: it transforms documents, databases and various sources into structured knowledge, ready to be consulted by an AI.

By doing so, it solves one of the biggest limitations of LLMs – the inability to access updated or private information without reconfiguration.

Using LlamaIndex with AI expands the application cases of the technology, from legal assistants to customer service bots and internal search engines.

Limitations resolved

LlamaIndex solves a fundamental limitation of LLMs: the difficulty of accessing real-time, up-to-date or private data.

Functioning as an external memory layer, it connects language models to sources such as documents, spreadsheets, SQL databases, and APIs, without the need to adjust model weights.

Its broad compatibility with formats such as PDF, CSV, SQL, and JSON makes it applicable to a variety of industries and use cases.

This integration is based on the RAG (Retrieval-Augmented Generation) paradigm, which combines information retrieval with natural language generation, allowing the model to consult relevant data at the time of inference.

As a framework, LlamaIndex structures, indexes, and makes this data available so that models like ChatGPT can access it dynamically.

This enables both technical and non-technical teams to develop AI solutions with greater agility, lower costs, and without the complexity of training models from scratch.

How to use LlamaIndex with LLM models like ChatGPT?

Also check out the N8N Training to automate flows with no-code tools in AI projects.

Usage steps

Agent and Automation Manager Training with AI It is recommended for those who want to learn how to apply these concepts in a practical way, especially in the development of autonomous agents based on generative AI.

Integrating LlamaIndex with LLMs like ChatGPT involves three main steps: data ingestion, indexing, and querying. The process starts with collecting and transforming the data into a format that is compatible with the model.

This data is then indexed into vector structures that facilitate semantic retrieval, allowing LLM to query it during text generation. Finally, the application sends questions to the model, which responds based on the retrieved data.

To connect LlamaIndex to ChatGPT, the typical approach involves using the Python libraries available in the official repository. Ingestion can be done using readers such as SimpleDirectoryReader (for PDF) or CSVReader, and indexing can be done using VectorStoreIndex.

Practical Example: Creating an AI Agent with Local Documents

Let’s walk through a practical example of how to use LlamaIndex to build an AI agent that answers questions based on a set of local PDF documents. This example illustrates the ingestion, indexing, and querying steps in more depth.

1 – Environment Preparation: Make sure you have Python installed and the necessary libraries. You can install them via pip: bash pip install llama-index pypdf

2 – Data Ingestion: Imagine you have a folder called my_documents containing several PDF files. LlamaIndex's SimpleDirectoryReader makes it easy to read these documents.

Data Ingestion

In this step, SimpleDirectoryReader reads all supported files (such as PDF, TXT, CSV) from the specified folder and converts them into Document objects that LlamaIndex can process.

3 – Data Indexing: After ingestion, documents need to be indexed. Indexing involves converting the text of documents into numerical representations (embeddings) that capture semantic meaning.

These embeddings are then stored in a VectorStoreIndex. python # Creates a vector index from # documents By default, it uses OpenAI embeddings and a simple in-memory VectorStore index = VectorStoreIndex.from_documents(docs) VectorStoreIndex is the core data structure that allows LlamaIndex to perform efficient semantic similarity searches.

When a query is made, LlamaIndex searches for the most relevant excerpts in the indexed documents, rather than performing a simple keyword search.

4 – Query and Response Generation: With the index created, you can now ask queries. as_query_engine() creates a query engine that interacts with the LLM (like ChatGPT) and the index to provide answers informed by your data.

Query and Response Generation

When query_engine.query() is called, LlamaIndex does the following:

Converts your question into an embedding.
Use this embedding to find the most relevant excerpts in indexed documents (Retrieval).
Send these relevant excerpts, along with your question, to LLM (Generation).
LLM then generates a response based on the context provided by your documents.

This flow demonstrates how LlamaIndex acts as a bridge, allowing LLM to answer questions about your private data, overcoming the limitations of the model’s pre-trained knowledge.

LlamaIndex Detailed Use Cases

Detailed Use Cases

LlamaIndex, by connecting LLMs to private, real-time data, opens up a wide range of practical applications. Let’s explore two detailed scenarios to illustrate its potential:

Smart Legal Assistant:

Scenario: A law firm has thousands of legal documents, such as contracts, case law, opinions, and statutes. Lawyers spend hours researching specific information in these documents to prepare cases or provide advice.
Solution with LlamaIndex: LlamaIndex can be used to index the entire document database of the firm. An LLM, such as ChatGPT, integrated with LlamaIndex, can act as a legal assistant.

Lawyers can ask natural language questions like “What are the legal precedents for land dispute cases in protected areas?” or “Summarize the termination clauses of contract X.”

LlamaIndex would retrieve the most relevant excerpts from the indexed documents, and LLM would generate a concise and accurate response, citing sources.
Benefits: Drastic reduction in research time, increased accuracy of information, standardization of responses and freeing up lawyers for tasks of greater strategic value.

Customer Support Chatbot for E-commerce:

Scenario: An online store receives a large volume of repetitive questions from customers about order status, return policies, product specifications, and promotions. Human support is overwhelmed, and response times are high.
Solution with LlamaIndex: LlamaIndex can index your store's FAQ, product manuals, return policies, (anonymized) order history, and even inventory data.

A chatbot powered by a LLM and LlamaIndex can instantly answer questions like “What is the status of my order #12345?”, “Can I return a product after 30 days?” or “What are the specifications of smartphone X?”.

Benefits: 24/7 support, reduced support team workload, improved customer satisfaction with fast and accurate responses, and scalability of support without proportional cost increases.

What are the advantages of LlamaIndex over other RAG tools?

What are the advantages of LlamaIndex over other RAG tools?

One of the main advantages of LlamaIndex is its relatively easy learning curve. Compared to solutions like LangChain and Haystack, it offers greater simplicity in implementing RAG pipelines while maintaining flexibility for advanced customizations.

Its modular architecture makes it easy to replace components, such as vector storage systems or data connectors, as project needs dictate.

LlamaIndex also stands out for its support for multiple data formats and clear documentation. The active community and constant update schedule make the framework one of the best RAG tools for developers and startups.

In comparison between RAG tools, the LlamaIndex vs Lang Chain highlights significant differences: while LangChain is ideal for complex flows and orchestrated applications with multiple steps, LlamaIndex favors simplicity and a focus on data as the main source of contextualization.

For an in-depth comparison, see this white paper from Towards Data Science, which explores the ideal usage scenarios for each tool. Another relevant source is the article RAG with LlamaIndex from the official LlamaHub blog, which discusses performance benchmarks.

We also recommend the post Benchmarking RAG pipelines, which presents comparative tests with objective metrics between different frameworks.

Get started with LlamaIndex in practice

Get started with LlamaIndex in practice

Now that you understand the definition of LlamaIndex and the benefits of integrating it with LLM models like ChatGPT, you can start developing custom AI solutions based on real data.

Using LlamaIndex with AI not only increases the accuracy of responses, it also unlocks new possibilities for automation, personalization, and business intelligence.

NoCode StartUp offers several learning paths for professionals interested in applying these technologies in the real world. From Agent Training with OpenAI until the SaaS IA NoCode Training, the courses cover everything from basic concepts to advanced architectures using indexed data.

June 17, 2025
7 min

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