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, Qwen and Ensu.

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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, Online + Free, Grammar Check, Text Editors and Europe. 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

     191 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...

    236 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
    2

    IA with Chinese Propaganda

    Redoodlev4
    Positive
    0

    for deeplevel reasoning,deepseek is better

    Boku Delorum
    Positive
    0

    Faster. Better answers for coding.

    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

     159 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.

    149 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

     117 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.

    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

    • 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
    Screenshot
    Euria icon
    Euria

    Confidential AI chat assistant delivering writing, summarization, voice transcription, email handling, and document search tools, all hosted exclusively in Switzerland with open source models, data sovereignty, and compliance wit...

    https://www.infomaniak.com
    Learn More
  6. Qwen icon

    Qwen

     69 likes

    The Qwen team is dedicated to pursuing artificial general intelligence (AGI) and is focused on building generalist models, including large language models and large multimodal models.

    Cost / License

    Application types

    Platforms

    • Mac
    • Windows
    • Online
    • Self-Hosted
    • Android
    Qwen screenshot 1
     
  8. Ensu icon

    Ensu

     36 likes

    Private offline AI chat using local language models on mobile and desktop, no accounts or tracking, open source Rust core, privacy-first design, cross-platform availability, ideal for confidential conversations, with end-to-end encrypted sync coming soon.

    Cost / License

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • Android Tablet
    • iPad
    Ensu screenshot 1
     
  9. AnythingLLM icon

    AnythingLLM

     69 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.

    245 AnythingLLM alternatives

    Cost / License

    • Free
    • Open Source (MIT)

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Self-Hosted
    • Docker
    AnythingLLM screenshot 1
     
  11. Euria icon

    Euria

     27 likes

    Confidential AI chat assistant delivering writing, summarization, voice transcription, email handling, and document search tools, all hosted exclusively in Switzerland with open source models, data sovereignty, and compliance with GDPR and FADP standards.

    Cost / License

    Application types

    Platforms

    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Software as a Service (SaaS)
    Euria screenshot 1
     
  12. LibreChat icon

    LibreChat

     49 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.

    Cost / License

    • Free
    • Open Source (MIT)

    Application types

    Platforms

    • Self-Hosted
    • Docker
    • Cloudron
    • npm
    LibreChat screenshot 1
     
    |
    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
  13. Ollama App icon

    Ollama App

     32 likes

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

    Cost / License

    Application types

    Alerts

    • Discontinued

    Platforms

    • Windows
    • Linux
    • Android
    • F-Droid
    Ollama App screenshot 1
     
    |
    1
    Discontinued

    The latest version (1.2.0) was released in September 2024.

    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
  14. Apertus icon

    Apertus

     29 likes

    As a fully open language model, Apertus allows researchers, professionals and enthusiasts to build upon the model and adapt it to their specific needs, as well as to inspect any part of the training process.

    Cost / License

    Application types

    Platforms

    • Online
    • Self-Hosted
    Apertus screenshot 1
     
  15. Meta Llama icon

    Meta Llama

     37 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.

    Cost / License

    • Free
    • Open Source

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • BSD
    • Self-Hosted
    Meta Llama screenshot 1
     
12 of 119 ChatGPT alternatives