Fast-mode variant of 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(opens in new tab)
Modalities
In / Out Price
$10 / $50per 1M
Context
1M
Released
Jul 24, 2026