No-code and low-code: differences for you to understand about the platforms

November 6, 2023
8 min

Estimated reading time: 13 minutes

Have you ever asked yourself what is needed to create an app without being a master in programming?

The world of technology is constantly evolving, and the demand for apps and softwares has never been higher.

Entrepreneurs and creative enthusiasts want to create their own digital solutions, but the idea of coding can be intimidating for many.

This is where the concepts of no-code it's the low-code.

Do you want to know the difference between the two proposals and find out which is the best option for those interested in entering the technology field? Read this content in full!

What is no-code?

No-code is a term that has gained prominence in the software development area. In practice, it allows you to create applications and digital solutions without the need for manual coding.

That is, you You don't need to be an experienced programmer to create your own application.

How does no code work?

Development platforms offer a intuitive visual interface and a variety of pre-programmed building blocks.

These blocks are like digital Lego pieces that you can drag and drop to build your app.

These platforms are designed to be accessible for everyone, whether you're an entrepreneur with an idea for a new app, a business professional who wants to automate processes, or even a curious student.

What are the best no-code platforms?

1. Bubble

Description: Powerful platform for building complete and complex web applications. Ideal for those who want to build community SaaS, marketplaces and apps.
Price: Free plan with limited features. Paid plans start at US$$29/month.
User Level: Intermediate to advanced. Requires basic understanding of development logic.

2. Adalo

Description: Focused on mobile apps with a simple visual interface. Perfect for creating apps for iOS and Android.
Price: Free plan with basic features. Paid plans start at US$$ 45/month.
User Level: Beginner to intermediate. Great for beginners.

3. FlutterFlow

Description: Visual platform for developing mobile applications (iOS and Android) based on Flutter. Offers flexibility and integration with APIs.
Price: Plans starting at US$$30/month.
User Level: Intermediate to advanced. Ideal for those who want a apps with a custom design.

4. webflow

Description: Focused on creating websites and virtual stores with visual design and total control over aesthetics.
Price: Plans starting at US$$ 14/month for websites and US$$ 29/month for e-commerce.
User Level: Intermediate. Recommended for those who want to create professional websites without programming.

5. Make (Integromat)

Description: Automation tool that connects different apps and services, allowing you to create automated workflows.
Price: Free plan with usage limits. Paid plans start at US$$9/month.
User Level: Beginner to advanced, depending on the complexity of the automations.

6. AppGyver

Description: Free platform for creating mobile and web applications with a visual interface.
Price: Free for personal and commercial use.
User Level: Intermediate. Offers advanced features for customization.

7. Xano

Description: no-code backend platform for creating APIs, managing databases and business logic. Ideal for apps who need a robust backend.
Price: Free plan with limited features. Paid plans start at US$$59/month.
User Level: Intermediate to advanced. Recommended for those who want to create more robust systems.

8. Dify

Description: Platform for creating AI agents without programming. Allows you to create chatbots and virtual assistants.
Price: Plans starting at US$$20/month.
User Level: Beginner to intermediate. Great for those who want to explore AI without coding.

9. N8N

Description: Automation platform that allows you to connect different tools and create complex workflows.
Price: Free on self-hosted version. Cloud plans start at US$$20/month.
User Level: Intermediate to advanced. Requires basic understanding of automation logic.

What are the benefits of no-code?

Now that you understand what no-code is, you may be wondering about the benefits of using this type of platform. We’ve separated the main ones for you, check them out:

Rapid development

The no-code provides greater speed in application development, allowing you to prototype and build solutions in a fraction of the time it would take with traditional coding.

This means it is possible create an app in a matter of days or weeks, instead of taking months to complete this type of project.

Time is essential in the corporate environment, where speed in delivering efficient solutions is a competitive differentiator.

Error-proof workflow

no-code platforms are designed to be error-proof, which means that processes flow smoothly and the chances of failures are reduced. This is valuable when it comes to process automation.

no-code makes it possible to create an automated workflow to manage tasks, approvals and notifications.

You can design these workflows intuitively, visualizing each step and ensuring everything works as planned.

Security

no-code platforms generally have built-in security features.

This provides peace of mind to app developers and users, as their data and information is protected.

Many of these features are built into the platform, which saves time by allowing you to focus on other aspects of development.

Efficiency

Using no-code, developers can focus on the business and logic layers of the application instead of getting bogged down in coding details.

This way, you can focus your energy on designing your application’s functionality, user experience, and integration with external systems, rather than dealing with endless lines of code.

Efficiency also translates into shorter development cycles. With less time spent coding and debugging, you can quickly iterate your application, making adjustments based on feedback users and market changes and needs.

Clients satisfaction

The speed with which you can build and iterate applications with the no-code tends to increase customer satisfaction.

Since it is possible to respond to user needs in an agile manner, implementing new features and improvements in less time. This creates a positive experience for customers and strengthens the relationship with them.

Low cost

Another advantage of the no-code is its potential to reduce costs.

Since you don't need to hire specialized programmers and can speed up the development of solutions, this system is more cost-effective than traditional approaches of software development.

The economy is a differentiator, especially for startups and small companies with limited budgets.

Now that you understand what no-code is and how it can benefit your application development projects, let's understand another approach: the low-code.

What is low-code?

Low-Code is a way of building applications in which little code is used. Unlike No-Code, in which there is no contact with code, in Low-Code it may be necessary to have knowledge of programming or general logic.

Therefore, the method requires basic programming knowledge, but also allows you to build applications quickly and easily.

low-code platforms provide pre-built, ready-to-use components. To understand it, think of a set of high-level building blocks.

With these components you can create custom apps with less coding effort.

Unlike the no-code, which is ideal for simple tasks and more basic applications, the low-code is suitable for more complex projects, which require a greater level of customization and integration with existing systems.

The approach offers an intermediate option for those who want to streamline the development process but maintain control over technical details.

Top Low-Code Tools

1. OutSystems

Description: Powerful low-code platform for creating corporate applications, with a focus on performance and integration.
Price: Customized plans for companies, with free learning options.
User Level: Intermediate to advanced. Ideal for developers and IT teams.

2. Microsoft Power Apps

Description: Microsoft platform for building enterprise applications with native integration to Microsoft 365 and Azure.
Price: Plans starting at US$$5/month per user.
User Level: Beginner to intermediate. Great for teams already using the Microsoft ecosystem.

3. Mendix

Description: low-code platform focused on creating corporate applications, with strong support for integrations and security.
Price: Free plan for learning and paid plans starting at US$$ 50/month.
User Level: Intermediate to advanced. Ideal for IT teams in large companies.

4. appian

Description: low-code platform focused on process automation and workflow management.
Price: Customized plans for companies, generally used in large organizations.
User Level: Intermediate to advanced. Recommended for those who need to automate complex processes.

5. Zoho Creator

Description: Platform that allows you to create customized applications for businesses, with a visual interface and customizable logic.
Price: Plans starting at US$$ 10/month per user.
User Level: Beginner to intermediate. Perfect for small businesses looking to digitize processes.

6. Retool

Description: low-code tool for creating internal dashboards and administrative applications with easy integration to databases and APIs.
Price: Free plans for small teams, with paid plans starting at US$$10/month per user.
User Level: Intermediate. Ideal for teams that need internal dashboards and tools.

7. Betty Blocks

Description: low-code platform focused on creating custom applications quickly, enabling custom logic with code.
Price: Customized plans for companies.
User Level: Intermediate to advanced. Great for those who want flexibility and customization.

8. glide

Description: low-code platform that allows you to create mobile and web applications directly from spreadsheets (Google Sheets).
Price: Free plan with limitations and paid plans starting at US$$25/month.
User Level: Beginner to intermediate. Great for quick and simple apps.

9. Thunkable

Description: low-code tool for creating mobile applications with visual interface and custom logic.
Price: Free plan with limitations and paid plans starting at US$$15/month.
User Level: Beginner to intermediate. Ideal for fast moving apps.

10. Salesforce Lightning

Description: Salesforce's low-code platform for creating custom applications, with a focus on integration with Salesforce CRM.
Price: Customized plans based on usage.
User Level: Intermediate to advanced. Great for companies already using Salesforce.

What is the advantage of using low-code?

Below, we will list the main benefits of low-code in programming:

Systems integration

One of the biggest advantages of low-code is the ability to easily integrate with other systems and technologies. This makes it a great choice for companies that want create applications that connect to multiple data sources and systems.

This flexibility is convenient for companies that want to improve their business processes through automation. As a result, a cohesive environment is created, where information flows easily, eliminating the need for manual data transfer tasks.

Development of programs in optimized time

low-code offers an effective solution for reduce development time. You can also create working prototypes and apps in a matter of weeks, staying ahead of the competition.

Rising market

There is a growing community of developers and resources available for low-code. This is excellent news for anyone interested in learning and leveraging this approach. With an expanding user base, there is more opportunities to networking, collaborative learning and knowledge sharing.

Furthermore, the job market is also responding to the trend. Companies around the world are looking for professionals with experience in the field. So, whether you want to boost your career or explore new opportunities, acquiring low-code skills is a smart choice.

Versatility

Although low-code offers pre-built components, it also allows for customization. For this reason, you can create applications that meet your company's specific needs.

This versatility is one of the reasons it is so attractive to organizations across all industries. You are not limited to the generic solutions, instead, can create custom applications that perfectly align with your unique workflows, processes, and requirements.

Which should I choose?

Now that we've talked about both no-code and low-code, you may be wondering which approach is right for you. The choice depends on your needs, the complexity of the project, and your coding skill level.

If you are new to software development and looking for simplicity, start with no-code. If you already have programming knowledge and want to develop more complex projects, low-code is the option.

Both approaches are transforming app development, making it more accessible and exciting. It's an investment worth every penny.

Want to know how much it will cost to create your app? With No-Code Start-Up's free courses and content, you can discover all this information and delve deeper into uncomplicated programming!

Also visit our Youtube channel

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

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

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

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?

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

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.

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.

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.

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

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.

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.

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.

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 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.

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.

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.

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?

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

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