# Claude Opus 5.5 vs Kimi K3

As of Oct 14, 2026, Claude Opus 5.5 leads Kimi K3 in 7 of 8 shared categories: General LLM, Reasoning, Coding › Web dev, Long context, Vision, Factuality, and Abstraction (ARC).

Claude Opus 5.5: $8.000000000000002 per 1M blended tokens.

Kimi K3: $4.125 per 1M blended tokens.

Claude Opus 5.5: closed weights.

Kimi K3: open weights.

- Which to pick, General LLM: As of Oct 14, 2026, Claude Opus 5.5 leads Kimi K3 in General LLM at #2 against #13.
- Which to pick, Reasoning: As of Oct 14, 2026, Claude Opus 5.5 leads Kimi K3 in Reasoning at #1 against #7.
- Which to pick, Science: As of Oct 14, 2026, Kimi K3 leads Claude Opus 5.5 in Science at #17 against #31.
- Which to pick, Coding › Web dev: As of Oct 14, 2026, Claude Opus 5.5 leads Kimi K3 in Coding › Web dev at #1 against #11.
- Which to pick, Long context: As of Oct 14, 2026, Claude Opus 5.5 leads Kimi K3 in Long context at #1 against #8.
- Which to pick, Vision: As of Oct 14, 2026, Claude Opus 5.5 leads Kimi K3 in Vision at #4 against #22.
- Which to pick, Factuality: As of Oct 14, 2026, Claude Opus 5.5 leads Kimi K3 in Factuality at #1 against #19.
- Which to pick, Abstraction (ARC): As of Oct 14, 2026, Claude Opus 5.5 leads Kimi K3 in Abstraction (ARC) at #1 against #8.

As of Oct 14, 2026, Claude Opus 5.5 is tied for state of the art in Reasoning (since Oct 2, 2026; sources LMArena Text (style-controlled, hard prompts); methodology v1.0).

As of Oct 14, 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).