Skip to content
  12.  
    13. © 2023 – 2025 OpenRouter, Inc

    Anthropic: Claude Haiku 4.5

    anthropic/claude-haiku-4.5

    Created Oct 15, 2025200,000 context
    $1/M input tokens$5/M output tokens

    Claude Haiku 4.5 is Anthropic’s fastest and most efficient model, delivering near-frontier intelligence at a fraction of the cost and latency of larger Claude models. Matching Claude Sonnet 4’s performance across reasoning, coding, and computer-use tasks, Haiku 4.5 brings frontier-level capability to real-time and high-volume applications.

    It introduces extended thinking to the Haiku line; enabling controllable reasoning depth, summarized or interleaved thought output, and tool-assisted workflows with full support for coding, bash, web search, and computer-use tools. Scoring >73% on SWE-bench Verified, Haiku 4.5 ranks among the world’s best coding models while maintaining exceptional responsiveness for sub-agents, parallelized execution, and scaled deployment.

    Providers for Claude Haiku 4.5

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

    Performance for Claude Haiku 4.5

    Compare different providers across OpenRouter

    Apps using Claude Haiku 4.5

    Top public apps this week using this model

    Recent activity on Claude Haiku 4.5

    Total usage per day on OpenRouter

    Uptime stats for Claude Haiku 4.5

    Uptime stats for Claude Haiku 4.5 across all providers

    Sample code and API for Claude Haiku 4.5

    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.