The Best Open Source ChatGPT AlternativesTop AI Chatbots & Large Language Model (LLM) Tools like ChatGPT

The best open source alternative to ChatGPT is DeepSeek. If that doesn't suit you, our users have ranked more than 100 alternatives to ChatGPT and loads of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to ChatGPT are Lumo by Proton, Jan.ai, OpenClaw and AnythingLLM.

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ChatGPT alternatives are mainly AI Chatbots, but if you're looking for Large Language Model (LLM) Tools or AI Writing Tools you can filter on that. Other popular filters include Free, Open Source, Android, Android + Free, EU, Android + Open Source and Grammar Check. You can also filter by region, for example EU-based alternatives if you prefer software developed in the European Union. These are just examples - use the filter bar below to find more specific alternatives to ChatGPT.
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Alternatives list

  1. DeepSeek icon

    DeepSeek

     105 likes

    DeepSeek is a state-of-the-art AI assistant designed to provide intelligent, conversational support across diverse tasks. It leverages advanced natural language processing and machine learning to answer questions, generate creative content, solve complex problems, and offer...

    165 DeepSeek alternatives

    Cost / License

    • Freemium
    • Open Source (MIT)

    Application types

    Platforms

    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    DeepSeek screenshot 1
     
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    4
    DeepSeek vs ChatGPT Comments
    Pilo-servusMariae
    3

    IA with Chinese Propaganda

    Redoodlev4
    Positive
    0

    for deeplevel reasoning,deepseek is better

    Boku Delorum
    Positive
    0

    Faster. Better answers for coding.

    Review by a new / low-activity user.
    3 of 4 comments
    • DeepSeek is Freemium and Open SourceChatGPT is Freemium and Proprietary
    • DeepSeek is LightweightChatGPT is not according to our users
  2. Lumo by Proton icon

    Lumo by Proton

     88 likes

    Privacy-first AI assistant utilizing zero-access encryption and open-source code, ensuring no data logging, profiling, or training on chats, providing user-controlled, encrypted conversations, with compliance under GDPR and no sharing with third parties.

    107 Lumo by Proton alternatives

    Cost / License

    Application types

    Platforms

    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • F-Droid
    Lumo by Proton screenshot 1
     
  4. Jan.ai icon

    Jan.ai

     92 likes

    Open-source offline AI platform supports local LLMs including Llama, Gemma, Qwen, GPT-oss, integrates cloud services like OpenAI and Anthropic, enables custom assistant creation, offers OpenAI-compatible API on localhost, operates across diverse hardware and ensures privacy.

    205 Jan.ai alternatives

    Cost / License

    • Free
    • Open Source

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Flathub
    • Flatpak
    Jan.ai screenshot 1
     
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    1
    Jan.ai vs ChatGPT Comments
    flintnpn
    Positive
    0

    Extremely easy to install, surprisingly lightweight private Chatbot that you can use either Locally or through the Web, better than trying to setup Ollama with a frontend like openwebui

    Review by a new / low-activity user.
    • Jan.ai is Free and Open SourceChatGPT is Freemium and Proprietary
    • Jan.ai is Privacy focused, Customizable and LightweightChatGPT is not according to our users
  5. Ad
  6. OpenClaw icon

    OpenClaw

     35 likes

    Personal AI assistant runs locally, supporting major chat platforms including WhatsApp, Telegram, Discord, iMessage, and more, with extension to Matrix and Zalo. Integrates speech and listening on macOS, iOS, and Android, plus offers a controllable live Canvas, prioritizing privacy.

    79 OpenClaw alternatives

    Cost / License

    • Free
    • Open Source (MIT)

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Self-Hosted
    • Docker
    • Node.JS
    OpenClaw screenshot 1
     
  7. AnythingLLM icon

    AnythingLLM

     43 likes

    Open-source privacy-focused chatbot platform allowing unlimited document uploads, multi-user and single-user modes, AI-powered chat with documents, vector database and LLM compatibility, customizable interface, message history, secure desktop deployment, and full user controls.

    180 AnythingLLM alternatives

    Cost / License

    • Free
    • Open Source (MIT)

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Self-Hosted
    • Docker
    AnythingLLM screenshot 1
     
  10. LibreChat icon

    LibreChat

     38 likes

    LibreChat is a free, open source AI chat platform. This Web UI offers vast customization, supporting numerous AI providers, services, and integrations. Serves all AI Conversations in one place with a familiar interface, innovative enhancements, for as many users as you need.

    115 LibreChat alternatives

    Cost / License

    • Free
    • Open Source (MIT)

    Application types

    Platforms

    • Self-Hosted
    • Docker
    • npm
    LibreChat screenshot 1
     
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    1
    LibreChat vs ChatGPT Comments
    maurosoft391
    Negative
    2

    it's free and open-source, but it's too difficult to setup and install.

    • LibreChat is Free and Open SourceChatGPT is Freemium and Proprietary
    • LibreChat is Privacy focusedChatGPT is not according to our users
  12. Ollama App icon

    Ollama App

     25 likes

    A modern and easy-to-use client for Ollama.

    115 Ollama App alternatives

    Cost / License

    Application types

    Platforms

    • Windows
    • Linux
    • Android
    • F-Droid
    Ollama App screenshot 1
     
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    1
    Ollama App vs ChatGPT Comments
    Alternative Software
    Positive
    0

    While not a direct alternative to ChatGPT (it’s just a client for Ollama), it is my preferred GUI to use Ollama.

    • Ollama App is Free and Open SourceChatGPT is Freemium and Proprietary
    • Ollama App is Privacy focusedChatGPT is not according to our users
  13. Meta Llama icon

    Meta Llama

     35 likes

    As part of Meta’s commitment to open science, today we are publicly releasing Llama (Large Language Model Meta AI), a state-of-the-art foundational large language model designed to help researchers advance their work in this subfield of AI.

    244 Meta Llama alternatives

    Cost / License

    • Free
    • Open Source

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • BSD
    • Self-Hosted
    Meta Llama screenshot 1
     
12 of 89 ChatGPT alternatives