Claude Opus 4.6 vs Kimi K2 0905 Preview
As of Oct 15, 2026, Claude Opus 4.6 leads Kimi K2 0905 Preview in 4 of 4 shared categories: General LLM, Reasoning, Long context, and Factuality.
Claude Opus 4.6
Close. Near-SOTA in Reasoning, rank #2.
Kimi K2 0905 Preview
#93 Best current rank: #93 in General LLM, as of Oct 15, 2026.
| Category | Claude Opus 4.6 | Kimi K2 0905 Preview |
|---|---|---|
| General LLM | #4 · Near-SOTA · General LLM Margin 2.7210884353741562 LMArena leaderboard dataset · Oct 13, 2026 | #93 · #93 in General LLM Margin 63.265306122448976 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #2 · Near-SOTA · Reasoning Margin 2.0547945205479436 LMArena leaderboard dataset · Oct 13, 2026 | #94 · #94 in Reasoning Margin 65.06849315068493 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #11 · #11 in Math Margin 22.22222222222223 Epoch AI benchmarking hub · Feb 5, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Science | #32 · #32 in Science Margin — Epoch AI benchmarking hub · Feb 5, 2026 | — |
| Coding | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Coding › Web dev | #35 · Was SOTA · Coding › Web dev Margin 31.775700934579433 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Long context | #2 · Near-SOTA · Long context Margin 0.6802721088435391 LMArena leaderboard dataset · Oct 13, 2026 | #115 · #115 in Long context Margin 78.2312925170068 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 9, 2026 | — |
| Factuality | #3 · Near-SOTA · Factuality Margin 2.9850746268656536 LMArena leaderboard dataset · Oct 13, 2026 | #106 · #106 in Factuality Margin 79.85074626865672 LMArena leaderboard dataset · Oct 13, 2026 |
Claude Opus 4.6: $10 per 1M blended tokens.
Kimi K2 0905 Preview: price per 1M tokens is unset in the catalog.
Claude Opus 4.6: closed weights.
Kimi K2 0905 Preview: open weights.
General LLM: As of Oct 15, 2026, Claude Opus 4.6 leads Kimi K2 0905 Preview in General LLM at #4 against #93.
Reasoning: As of Oct 15, 2026, Claude Opus 4.6 leads Kimi K2 0905 Preview in Reasoning at #2 against #94.
Long context: As of Oct 15, 2026, Claude Opus 4.6 leads Kimi K2 0905 Preview in Long context at #2 against #115.
Factuality: As of Oct 15, 2026, Claude Opus 4.6 leads Kimi K2 0905 Preview in Factuality at #3 against #106.
Claude Opus 4.6 · Kimi K2 0905 Preview
Claude Opus 4.6 or Kimi K2 0905 Preview?
As of Oct 15, 2026, Claude Opus 4.6 leads Kimi K2 0905 Preview in 4 of 4 shared categories: General LLM, Reasoning, Long context, and Factuality.
Claude Opus 4.6 or Kimi K2 0905 Preview for General LLM?
As of Oct 15, 2026, Claude Opus 4.6 leads Kimi K2 0905 Preview in General LLM at #4 against #93.
Claude Opus 4.6 or Kimi K2 0905 Preview for Reasoning?
As of Oct 15, 2026, Claude Opus 4.6 leads Kimi K2 0905 Preview in Reasoning at #2 against #94.
Claude Opus 4.6 or Kimi K2 0905 Preview for Long context?
As of Oct 15, 2026, Claude Opus 4.6 leads Kimi K2 0905 Preview in Long context at #2 against #115.