Haiku 5.5
1 article tagged with Haiku 5.5
November 10, 2026
model releaseAnthropic
Anthropic says to start with Opus 5.5 at medium effort, reserves Fable 5.2 for hardest tasks
Anthropic published guidance on November 9 (US time) on how to choose among Fable 5.2, Opus 5.5, Sonnet 5.5 and Haiku 5.5 in Claude Code and Claude Platform. It recommends trying Opus 5.5 at medium effort first. Fable 5.2, the top model announced the same day, is positioned for advanced coding, finance and science work.