~anthropic/claude-opus-latest
This model always redirects to the latest model in the Claude Opus family.
This model always redirects to the latest model in the Claude Opus family.
This model always redirects to the latest model in the Claude Opus family.
Claude Opus Latest costs $5.00/M input tokens and $25.00/M output tokens, with separate rates for Cache Read at $0.50/M tokens, Cache Write at $6.25/M tokens and Cache Write (1h) at $10.00/M tokens.
Claude Opus Latest has a 1,000,000 token context window. It supports up to 128,000 completion tokens.
Yes. Claude Opus Latest accepts tools and tool_choice for function calling. It also supports structured outputs via a JSON schema in response_format.
Claude Opus Latest accepts text, images and files such as PDFs as input and returns text.
Claude Opus 5 (Fast), Claude Sonnet 5, Claude Fable 5 and 13 more are other text models from Anthropic.
Claude Opus Latest was released on April 21, 2026.
Drop-in code to call this model. OpenRouter's API is OpenAI-compatible — most SDKs work by just swapping the base URL. The only thing that changes between models is the model slug below.