Sigma Chat AlternativesAI Chatbots & AI Writing Tools like Sigma Chat

Sigma Chat is described as 'A chat platform from Sigma AI that aims to serve as a cheaper alternative to ChatGPT' and is a AI Chatbot in the ai tools & services category. There are more than 10 alternatives to Sigma Chat, not only websites but also apps for a variety of platforms, including Android, iPhone, iPad and Android Tablet apps. The best Sigma Chat alternative is ChatGPT, which is free. Other great sites and apps similar to Sigma Chat are DeepSeek, Lumo by Proton, Mistral Le Chat and Perplexity.

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Alternatives list

  1. ChatGPT icon

    ChatGPT

     419 likes
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    AI language model perfect for generating interactive human-like text in various styles. Built on architecture allowing real-time natural language generation, ideal for applications demanding fluent, relevant output over diverse topics broadened by extensive training data.

    393 ChatGPT alternatives

    Cost / License

    • Freemium (Subscription)
    • Proprietary

    Application types

    Platforms

    • Mac
    • Windows
    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Google Chrome
    ChatGPT screenshot 1
     

    • ChatGPT is the most popular Web-based, Windows, Android & Mac alternative to Sigma Chat.

    • ChatGPT is the most popular free alternative to Sigma Chat.

    • ChatGPT is Freemium and ProprietarySigma Chat is also Freemium and Proprietary
  2. DeepSeek icon

    DeepSeek

     92 likes
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    DeepSeek is an advanced AI designed to assist with answering questions, solving problems, and providing insights through natural, conversational interactions.

    124 DeepSeek alternatives

    Cost / License

    • Freemium (Pay once or Subscription)
    • Open Source

    Application types

    Platforms

    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    DeepSeek screenshot 1
     

    • DeepSeek is the most popular Open Source alternative to Sigma Chat.

    • DeepSeek is Freemium and Open SourceSigma Chat is Freemium and Proprietary
    • DeepSeek is LightweightSigma Chat is not according to our users
  4. Lumo by Proton icon

    Lumo by Proton

     69 likes
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    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.

    84 Lumo by Proton alternatives

    Cost / License

    • Freemium (Subscription)
    • Open Source

    Application types

    Platforms

    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • F-Droid
    Lumo by Proton screenshot 1
     
  5. Mistral Le Chat icon

    Mistral Le Chat

     90 likes
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    Explore Mistral’s conversational tech with educational, fun interactivity. Customizable, unbiased models excel in performance benchmarks, supporting flexible deployment.

    156 Mistral Le Chat alternatives

    Cost / License

    • Free Personal
    • Proprietary

    Application types

    Platforms

    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Self-Hosted
    • Software as a Service (SaaS)
    Mistral Le Chat screenshot 1
     

    • Mistral Le Chat is the most popular SaaS & Self-Hosted alternative to Sigma Chat.

    • Mistral Le Chat is Free Personal and ProprietarySigma Chat is Freemium and Proprietary
  6. Perplexity icon

    Perplexity

     131 likes
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    AI-powered engine offers precise answers through a conversational interface utilizing large language models. Features include predictive text, personalized profiles, and Pro Search for advanced AI capabilities. Ideal for summarizing content, exploring topics, and enhancing productivity.

    31 Perplexity alternatives

    Cost / License

    • Freemium (Subscription)
    • Proprietary

    Application types

    Platforms

    • Mac
    • Windows
    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Google Chrome
    Perplexity screenshot 1
     
  7. Google Gemini icon

    Google Gemini

     134 likes
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    AI assistant offers writing, planning, learning support, generating images from text, and transforming text to speech. Utilizes large language models and syncs across devices without requiring coding skills. Supports dark mode and ad-free experience.

    283 Google Gemini alternatives

    Cost / License

    • Freemium (Subscription)
    • Proprietary

    Application types

    Platforms

    • Online
    • Android
    • iPhone
    • Android Wear
    • Google Docs
    • Gmail
    Google Gemini screenshot 1
     
  9. DuckDuckGo AI Chat icon

    DuckDuckGo AI Chat

     73 likes
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    Duck.ai is a free feature that allows you to have private conversations with 3rd-party AI chat models, anonymized by us. It currently supports Anthropic’s Claude 3 Haiku, Meta’s Llama 4, Mistral AI’s Mistral Small 3, and OpenAI’s GPT-4o mini.

    90 DuckDuckGo AI Chat alternatives

    Cost / License

    • Freemium (Subscription)
    • Proprietary

    Application types

    Platforms

    • Mac
    • Windows
    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • DuckDuckGo
    DuckDuckGo AI Chat screenshot 1
     
  10. Claude icon

    Claude

     81 likes
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    Claude is a next-generation AI assistant based on Anthropic’s research into training helpful, honest, and harmless AI systems. Accessible through chat interface and API in our developer console, Claude is capable of a wide variety of conversational and text processing tasks...

    228 Claude alternatives

    Cost / License

    • Freemium
    • Proprietary

    Application types

    Platforms

    • Mac
    • Windows
    • Online
    • Android
    • iPhone
    • iPad
    • Software as a Service (SaaS)
    • Google Sheets
    Claude screenshot 1
     
  11. Microsoft Copilot icon

    Microsoft Copilot

     81 likes
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    Microsoft Copilot (previously know as Bing Chat) is a new Chatbot feature for Microsoft Bing which aim to revolutionize the search engine experience through AI-powered technology.

    209 Microsoft Copilot alternatives

    Cost / License

    • Freemium (Subscription)
    • Proprietary

    Application types

    Platforms

    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Mac
    • Windows
    Microsoft Copilot screenshot 1
     
  12. Grok icon

    Grok

     45 likes
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    Grok is a generative artificial intelligence chatbot developed by xAI. Based on the large language model (LLM) of the same name, it was launched in 2023 as an initiative by Elon Musk. The chatbot is advertised as having a "sense of humor" and direct access to X...

    123 Grok alternatives

    Cost / License

    • Freemium (Subscription)
    • Proprietary

    Application types

    Platforms

    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • X
    Grok screenshot 1
     
  13. Poe icon

    Poe

     66 likes
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    Poe lets you ask questions, get instant answers, and have back-and-forth conversations with AI. Includes Claude from Anthropic and a variety of other bots.

    300 Poe alternatives

    Cost / License

    • Freemium (Subscription)
    • Proprietary

    Application types

    Platforms

    • Mac
    • Windows
    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    Poe screenshot 1
    Poe screenshot 2
    Poe screenshot 3
     
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