Claude Opus 5 (Fast)

Fast-mode variant of [Opus 5](/anthropic/claude-opus-5) - identical capabilities with higher output speed at 2x pricing relative to regular Opus 5. Learn more in Anthropic's docs: https://platform.claude.com/docs/en/build-with-claude/fast-mode

• Context window: 1,000,000 tokens
• Input: text, image, file
• Output: text
• Pricing: $10/M input tokens, $50/M output tokens

View on OpenRouter. Model data sourced from OpenRouter.