{"id":"anthropic/claude-sonnet-4.5","aliases":["anthropic/claude-4.5-sonnet-20250929","openrouter:anthropic/claude-sonnet-4.5"],"displayName":"Anthropic: Claude Sonnet 4.5","author":"anthropic","createdAt":"2025-09-29T16:01:16.000Z","updatedAt":"2026-09-08T17:00:59.308Z","popularityRank":156,"metadata":{"modalities":["file","image","text"],"inputModalities":["text","image","file"],"outputModalities":["text"],"contextLength":1000000,"maxOutputTokens":64000,"family":"claude-sonnet","modelsDev":{"provider":"openrouter","sourceUrl":"https://models.dev/api.json","description":"Balanced Claude model for coding, analysis, agent workflows, and cost control","lastUpdated":"2025-09-29","releaseDate":"2025-09-29","capabilities":{"reasoning":true,"tool_call":true,"attachment":true,"temperature":true,"open_weights":false,"structured_output":true},"knowledgeCutoff":"2025-07-31"},"tokenizer":"Claude","licenseStatus":"unknown","weightsAvailable":false,"hostedInferenceAllowed":false,"gated":false,"supportedParameters":["include_reasoning","max_completion_tokens","max_tokens","reasoning","response_format","stop","structured_outputs","temperature","tool_choice","tools","top_k","top_p"],"providerNames":[],"designArenaCategories":["3d","asciiart","codecategories","dataviz","gamedev","svg","uicomponent","website","fullstack","mobileapps","webapps"],"isModerated":true},"availability":"unknown","externalBest":null,"multivibeNetwork":null,"description":"Claude Sonnet 4.5 is Anthropic’s most advanced Sonnet model to date, optimized for real-world agents and coding workflows. It delivers state-of-the-art performance on coding benchmarks such as SWE-bench Verified, with...","runtimes":[],"protocols":[],"harnesses":[]}