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anthropic

Anthropic: Claude Opus 5.5

anthropic/claude-opus-5.5

Claude Opus 5.5 is Anthropic's flagship model for demanding reasoning, coding, and long-horizon agentic work, succeeding Claude Opus 5.

Context window: 1,000,000 tokens
Input: text, image, file
Output: text
Pricing: $4/M input tokens, $20/M output tokens

View on OpenRouter. Model data sourced from OpenRouter.

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