Fast-mode variant of Opus 4.8 - identical capabilities with higher output speed at 2x pricing relative to regular Opus 4.8.
Learn more in Anthropic's docs: https://platform.claude.com/docs/en/build-with-claude/fast-mode(opens in new tab)
Modalities
Input Price
$10/M
Output Price
$50/M
Context
1M
Released
May 27, 2026