# Claude Haiku 5.5 vs Claude Opus 5

As of Oct 15, 2026, Claude Haiku 5.5 leads Claude Opus 5 in 0 of 2 shared categories.

Claude Haiku 5.5: $0.19999999999999998 per 1M blended tokens.

Claude Opus 5: $10 per 1M blended tokens.

Claude Haiku 5.5: closed weights.

Claude Opus 5: closed weights.

- Which to pick, Science: As of Oct 15, 2026, Claude Opus 5 leads Claude Haiku 5.5 in Science at #12 against #38.
- Which to pick, Coding › Web dev: As of Oct 15, 2026, Claude Opus 5 leads Claude Haiku 5.5 in Coding › Web dev at #6 against #28.

As of Oct 15, 2026, Claude Haiku 5.5 is state of the art on best per dollar in Math (since Oct 14, 2026; sources Humanity's Last Exam; methodology v1.0).

As of Oct 15, 2026, Claude Opus 5 is near state of the art, rank #4 in Factuality (since Oct 15, 2026; sources LMArena Text factuality; methodology v1.0).