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Anthropic: Claude Opus 4.6 (Fast)

anthropic/claude-opus-4.6-fast

Released Apr 7, 20261,000,000 context
Starting at $30/M input tokensStarting at $150/M output tokens$10/K web search

Fast-mode variant of Opus 4.6 - identical capabilities with higher output speed at premium 6x pricing.

Learn more in Anthropic's docs: https://platform.claude.com/docs/en/build-with-claude/fast-mode

Recent activity on Claude Opus 4.6 (Fast)

Total usage per day on OpenRouter

Prompt
225M
Completion
4.72M
Reasoning
30K

Prompt tokens measure input size. Reasoning tokens show internal thinking before a response. Completion tokens reflect total output length.