# Claude Opus 5 vs Kimi K3

As of Oct 15, 2026, Claude Opus 5 leads Kimi K3 in 6 of 8 shared categories: General LLM, Science, Coding › Web dev, Vision, Factuality, and Abstraction (ARC).

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

Kimi K3: $4.109999999999999 per 1M blended tokens.

Claude Opus 5: closed weights.

Kimi K3: open weights.

- Which to pick, General LLM: As of Oct 15, 2026, Claude Opus 5 leads Kimi K3 in General LLM at #11 against #13.
- Which to pick, Reasoning: As of Oct 15, 2026, Kimi K3 leads Claude Opus 5 in Reasoning at #7 against #9.
- Which to pick, Science: As of Oct 15, 2026, Claude Opus 5 leads Kimi K3 in Science at #12 against #17.
- Which to pick, Coding › Web dev: As of Oct 15, 2026, Claude Opus 5 leads Kimi K3 in Coding › Web dev at #6 against #12.
- Which to pick, Long context: As of Oct 15, 2026, Kimi K3 leads Claude Opus 5 in Long context at #8 against #9.
- Which to pick, Vision: As of Oct 15, 2026, Claude Opus 5 leads Kimi K3 in Vision at #12 against #22.
- Which to pick, Factuality: As of Oct 15, 2026, Claude Opus 5 leads Kimi K3 in Factuality at #4 against #22.
- Which to pick, Abstraction (ARC): As of Oct 15, 2026, Claude Opus 5 leads Kimi K3 in Abstraction (ARC) at #3 against #8.

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).

As of Oct 15, 2026, Kimi K3 is tied for state of the art in General LLM (since Oct 13, 2026; sources LMArena Text (style-controlled, overall); methodology v1.0).