Claude Sonnet 5.5 is Anthropic's Sonnet-class model for well-scoped everyday work, succeeding Claude Sonnet 5 as a direct upgrade. It is especially strong at building features, fixing bugs, and producing...
anthropic/claude-sonnet-5.5Claude Sonnet 5.5 is an API model from Anthropic, released on Sep 28, 2026, with a context window of 1,000,000 tokens, pricing of $2 per million input tokens and $10 per million output tokens. It accepts file, image, text input and produces text output.
At listed prices, a request with 10,000 input tokens and 1,000 output tokens costs about $0.03.
Specs are sourced from OpenRouter and were last checked on Nov 3, 2026. Always confirm current pricing and limits with the provider before production use.
Claude Sonnet 5.5 supports a context window of 1,000,000 tokens.
Claude Sonnet 5.5 is listed at $2 per million input tokens and $10 per million output tokens on OpenRouter.
Claude Sonnet 5.5 was published on Sep 28, 2026.
Claude Sonnet 5.5 accepts file, image, text input and produces text output.