The 21 Best ChatGPT Alternatives in 2025 (Free & Paid)

With the explosion of conversational AI tools, many ChatGPT alternatives offer advanced features tailored to business and personal needs. What are these free and paid tools, and how do they stand out?

Here is a list of the 21 best solutions with their strengths and limitations to help you choose.

Best Favorite ChatGPT Alternatives in 2025

1. Claude (Anthropic)

Claude, developed by Anthropic, is definitely the best free and professional alternative to ChatGPT.

Featuring an easy-to-use interface, Claude is designed to understand complex contexts and provide highly personalized, detailed answers. It is also a very good assistant for developers.

Benefits :

• Many advanced options: analysis of long PDF files, the possibility of creating projects (alternative to custom GPT), the possibility of customizing the writing style, customizing the profile associated with your account, etc.
• Free version with the best models available then premium version.
• Powerful for analyzing and summarizing long texts.
• Very good at programming.
• Models accessible via API.

Disadvantages:

• Does not offer AI image generation.
• Does not offer web search.
• Quickly blocked by daily request quotas with the free version.

2. Mistral AI

Mistral AI, a French startup, offers a powerful and free AI chatbot called Le Chat.

Offering powerful, lightweight and affordable open-source models, the chatbot can analyze documents, search the web, create agents, generate quality AI visuals and even be integrated via API to serve in a wide variety of business applications.

Benefits :

• Open-source model, customizable according to needs.
• Free advanced features: web search, AI image generation, agent creation, PDF analysis, …
• Models available via API with competitive pricing.
• European solution respecting GDPR standards.

Disadvantages:

• Less efficient at handling complex queries.

3. Gemini (Google DeepMind)

Gemini, launched by Google DeepMind, offers conversational AI integrated into the Google ecosystem. Featuring a free online chatbot running on its fastest model, Gemini Flash, Gemini is a versatile solution with a paid version called Gemini Advanced.

Benefits :

• Seamless integration with Google products.
• Excellent search capability with access to up-to-date data.
• Powerful free version.
• Ability to dictate prompts orally and listen to the responses in audio.

Disadvantages:

• Less efficient in specific customization cases.
• Not possible to create agents or projects like custom GPT.
• Image generation is not yet complete.
• Document scanning is limited to documents uploaded to Google Drive.

4. NotebookLM (Google)

NotebookLM is an AI assistant designed by Google for professionals and students. It allows you to organize and interact with data in diverse formats via an interactive chat that can generate an audio discussion about the listed sources.

Benefits :

• Totally free.
• Adding sources allows the chatbot to not hallucinate and to base its responses only on the sources provided by the user.
• Ideal for structuring and analyzing notes, files and videos on the same subject.
• Ability to answer questions from specific sources uploaded by the user.

Disadvantages:

• Less suitable for general conversations.
• Need to add quality sources to get quality answers.
• Not all YouTube videos can be embedded as a source.

5. HuggingChat (Hugging Face)

HuggingChat is an open-source alternative developed by the Hugging Face platform. It is mainly aimed at developers and researchers. The interface allows you to select the open-source model you want to interact with.

Benefits :

• Great flexibility thanks to its open-source code.
• Integration with a multitude of AI models.

Disadvantages:

• Less intuitive interface than other alternatives mentioned above.

6. Perplexity AI

Perplexity AI is a conversational AI search engine designed to provide accurate answers while citing its sources found on the web.

Benefits :

• Ability to respond quickly while providing clear references from the web.
• Simple interface, accessible to all.
• Ideal for academic and professional research.

Disadvantages:

• Less effective for discussions requiring thought and creativity.
• Does not handle long complex interactions.

7. Grok

Grok is an AI developed by xAI, integrated into the X platform (formerly Twitter). Available in Grok-2 and Grok-2 mini versions, these latest versions are comparable in performance to OpenAI regarding conversation quality, reasoning, coding and multimodal understanding while offering real-time responses thanks to the X ecosystem.

Benefits :

• Outperforms GPT-4 Turbo and Claude 3.5 on several benchmarks.
• Real-time access to X data for seamless interaction.
• Enterprise API with advanced security and easy integration.

Boundaries :

• Reserved for X Premium users.
• In the beta phase, some adjustments are needed.

8. Microsoft Copilot

Microsoft Copilot is integrated into the Microsoft 365 ecosystem (Word, Excel, Teams, etc.) to optimize productivity. It can be used to search for information on Bing, analyze data, and write documents. The AI ​​model behind Microsoft Copilot is OpenAI.

Benefits :

• Deep integration into existing Microsoft tools.
• Fast generation of tables, graphs and presentations.
• The free version is available online.

Disadvantages:

• Limited features without a Microsoft 365 subscription.
• Requires enterprise configuration for advanced use cases.

9. Moshi (Kyutai)

Moshi is a voice assistant developed by Kyutai, a French artificial intelligence laboratory.

This open-source model is a powerful alternative to ChatGPT Voice, capable of generating voice responses in real-time with very limited latency. Still, in the development phase, Moshi is only usable in English.

Benefits :

• Near-instant responses thanks to a voice-optimized model.
• Faithful reproduction of emotions and accents, with multiple vocal styles (whispers, thematic voices, etc.).
• Offline operation possible on standard devices like MacBook Pro.
• Open source, customizable and transparent model thanks to an integrated watermark to indicate AI-generated content.

Disadvantages:

• Still needs to be available in French.
• No API has been offered yet.

10. GitHub Copilot

GitHub Copilot, developed by GitHub and OpenAI, is an AI integrated into development environments like Visual Studio Code. It assists programmers by automatically generating code and suggestions in real-time.

Benefits :

• Significantly increases developer productivity.
• Supports multiple programming languages ​​including Python, JavaScript, and C#.
• Integrated directly into popular IDEs.

Disadvantages:

• Requires a paid subscription.
• Less suitable for beginners without prior programming knowledge.

11. Bolt.new

Bolt.new is an AI platform that allows you to create a fully functional SaaS application from just a few lines of prompts. The tool can also be used to create a complete website.

Benefits :

• Great for creating a working MVP for a more complex project.
• Simple and quick-to-use interface, even for non-technical profiles.

Disadvantages:

• It can consume a lot of credits if used incorrectly.
• Requires very precise prompts to exploit its full potential.

12. Poe (Quora)

Poe, developed by Quora, combines AI chat capabilities with multiple models, including GPT and Claude, to deliver a versatile experience. Poe, which stands for Platform for Open Exploration, allows users to ask questions and receive instant answers.

Benefits :

• Access to multiple models from a single platform.
• Designed for fast and varied responses.

Disadvantages:

• Less rich features compared to specialized solutions.
• It may need more depth for some applications.

13. YouChat (You.com)

YouChat is a chatbot integrated into the You.com search engine. It offers conversational responses based on real-time searches.

Benefits :

• Updated and contextualized answers.
• It can work as a classic search engine and a chatbot.
• Free and accessible without complex configuration.

Disadvantages:

• Less efficient for long, complex discussions.
• Less suitable for advanced professional tasks.

14. Forefront AI

Forefront AI is a platform that allows developers to customize and deploy open-source artificial intelligence models by fine-tuning them to their specific data. It offers a user experience comparable to that of proprietary platforms while ensuring full control over the models and data used.

Benefits :

• Advanced features for data processing.
• Professional solutions-oriented approach.

Disadvantages:

• Sometimes complex interface for new users.
• Requires premium subscription for advanced features.

15. BlackBox (AI)

BlackBox is an AI specialized in code generation. Targeting developers, it is designed to solve technical problems, generate snippets, and improve development efficiency.

Benefits :

• A powerful tool to automate code writing.
• Compatible with multiple programming languages.
• Ideal for optimizing rapid prototype development.

Disadvantages:

• Limited to developers and programmers.
• Does not manage projects outside the technical framework.

16. Pi (Inflection)

Pi, developed by Inflection AI, is an artificial intelligence-powered personal assistant designed to provide empathetic support and natural conversations.

Launching in May 2023, Pi aims to serve as a coach, confidant, and creative partner, enabling users to explore and understand the world through fluid and engaging interactions.

17. Character.ai

Character.ai is a platform for interacting with fictional characters created for specific purposes by community members. It is also possible to create your own custom AI character.

18. NotionAI

Integrated into Notion, NotionAI is designed to assist users in creating and managing content within their databases and collaborative workspaces.

The tool can convert handwritten notes into computer-written notes, serve as a writing assistant, analyze PDF and image files, …

19. Jasper AI

Jasper AI is a suite of tools specifically designed for marketers. Based on the most powerful AI models, including those offered by OpenAI, this tool is particularly useful for generating articles, social media post hooks, marketing emails and ads for your sponsored links campaigns.

20. Chatsonic (Writesonic)

Chatsonic is an alternative to ChatGPT designed to meet use cases such as marketing, writing and social media management. It can exchange with PDF files, generate images or summarize documents and texts.

21. Replica

Replika is an AI chatbot focusing primarily on social interactions and emotional support.