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Best Grok alternatives

3 tools developers use instead of Grok, ranked by popularity. 3 offer a free plan and 1 is open source. Updated October 2026.

Free Open source Clear Showing 1–3 of 3
  1. GPT (OpenAI) logo

    GPT (OpenAI)

    Free plan

    OpenAI's GPT family of frontier models, available through ChatGPT and the OpenAI API, including coding-tuned Codex variants.

    Models
    Details Visit
  2. Gemini logo

    Gemini

    Free plan

    Google's multimodal Gemini model family with long context windows, available in the Gemini app, Google AI Studio and Vertex AI.

    Models
    Details Visit
  3. Kimi K2 logo

    Kimi K2

    Free plan Open source

    Moonshot AI's open-weight mixture-of-experts model line, strong at agentic coding and tool use, accessible via the Kimi app and API.

    Models
    Details Visit