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    Horizon Beta

    openrouter/horizon-beta

    Created Aug 1, 2025256,000 context

    This is a cloaked model provided to the community to gather feedback. This is an improved version of Horizon Alpha

    Note: It’s free to use during this testing period, and prompts and completions are logged by the model creator for feedback and training.

    Sample code and API for Horizon Beta

    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.