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    xAI: Grok 4

    x-ai/grok-4

    Created Jul 9, 2025256,000 context
    Starting at $3/M input tokensStarting at $15/M output tokens

    Grok 4 is xAI's latest reasoning model with a 256k context window. It supports parallel tool calling, structured outputs, and both image and text inputs. Note that reasoning is not exposed, reasoning cannot be disabled, and the reasoning effort cannot be specified. Pricing increases once the total tokens in a given request is greater than 128k tokens. See more details on the xAI docs

    Providers for Grok 4

    OpenRouter routes requests to the best providers that are able to handle your prompt size and parameters, with fallbacks to maximize uptime.

    Performance for Grok 4

    Compare different providers across OpenRouter

    Apps using Grok 4

    Top public apps this week using this model

    Recent activity on Grok 4

    Total usage per day on OpenRouter

    Uptime stats for Grok 4

    Uptime stats for Grok 4 across all providers

    Sample code and API for Grok 4

    OpenRouter normalizes requests and responses across providers for you.

    OpenRouter provides an OpenAI-compatible completion API to 400+ models & providers that you can call directly, or using the OpenAI SDK. Additionally, some third-party SDKs are available.

    In the examples below, the OpenRouter-specific headers are optional. Setting them allows your app to appear on the OpenRouter leaderboards.

    Using third-party SDKs

    For information about using third-party SDKs and frameworks with OpenRouter, please see our frameworks documentation.

    See the Request docs for all possible fields, and Parameters for explanations of specific sampling parameters.