Model identifier: claude-opus-5-5.
Anthropic model for long-running agentic coding and knowledge work.
Active model available through the Claude API, Amazon Bedrock, Google Cloud, Microsoft Foundry and Claude Platform on AWS. Standard Claude API rates, USD per million tokens: input $4; output $20. Context is documented as 1M tokens and standard maximum output as 128K tokens. Caching, batch and accelerated processing have separate rates. API access terms: https://www.anthropic.com/legal/commercial-terms
Official model documentation: https://platform.claude.com/docs/en/models/opus-5-5/overview Researched on 23 October 2026. Undocumented specifications are omitted.