# Claude Opus 4.5 vs Claude Opus 5

As of Oct 14, 2026, Claude Opus 4.5 leads Claude Opus 5 in 0 of 7 shared categories.

Claude Opus 4.5: $10 per 1M blended tokens.

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

Claude Opus 4.5: closed weights.

Claude Opus 5: closed weights.

- Which to pick, General LLM: As of Oct 14, 2026, Claude Opus 5 leads Claude Opus 4.5 in General LLM at #11 against #33.
- Which to pick, Reasoning: As of Oct 14, 2026, Claude Opus 5 leads Claude Opus 4.5 in Reasoning at #9 against #28.
- Which to pick, Science: As of Oct 14, 2026, Claude Opus 5 leads Claude Opus 4.5 in Science at #12 against #68.
- Which to pick, Coding › Web dev: As of Oct 14, 2026, Claude Opus 5 leads Claude Opus 4.5 in Coding › Web dev at #6 against #53.
- Which to pick, Long context: As of Oct 14, 2026, Claude Opus 5 leads Claude Opus 4.5 in Long context at #9 against #19.
- Which to pick, Factuality: As of Oct 14, 2026, Claude Opus 5 leads Claude Opus 4.5 in Factuality at #4 against #36.
- Which to pick, Abstraction (ARC): As of Oct 14, 2026, Claude Opus 5 leads Claude Opus 4.5 in Abstraction (ARC) at #3 against #49.

As of Oct 14, 2026, Claude Opus 4.5 is a former state-of-the-art holder in Reasoning (since Dec 1, 2025; sources LMArena Text (style-controlled, hard prompts); methodology v1.0).

As of Oct 14, 2026, Claude Opus 5 is near state of the art, rank #4 in Factuality (since Oct 14, 2026; sources LMArena Text factuality; methodology v1.0).