Claude Sonnet 5.5 vs Kimi K2 Thinking Turbo
As of Oct 14, 2026, Claude Sonnet 5.5 leads Kimi K2 Thinking Turbo in 6 of 6 shared categories: General LLM, Reasoning, Science, Coding › Web dev, Long context, and Factuality.
Claude Sonnet 5.5
Yes. SOTA in co-SOTA in Coding, co-SOTA in Coding › Agentic and co-SOTA in Vision.
Kimi K2 Thinking Turbo
It used to be. Was SOTA in Coding › Web dev.
| Category | Claude Sonnet 5.5 | Kimi K2 Thinking Turbo |
|---|---|---|
| General LLM | #27 · #27 in General LLM Margin 18.367346938775512 LMArena leaderboard dataset · Oct 13, 2026 | #81 · #81 in General LLM Margin 55.10204081632653 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #18 · #18 in Reasoning Margin 13.013698630136986 LMArena leaderboard dataset · Oct 13, 2026 | #77 · #77 in Reasoning Margin 53.42465753424658 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #4 · #4 in Math Margin 6.666666666666671 Epoch AI benchmarking hub · Sep 28, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Science | #3 · #3 in Science Margin — Epoch AI benchmarking hub · Sep 28, 2026 | #60 · #60 in Science Margin — Epoch AI benchmarking hub · Nov 6, 2025 |
| Coding | #1 · Co-SOTA · Coding Margin 0 Terminal-Bench Harbor Hub · Oct 6, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Coding › Agentic | #1 · Co-SOTA · Coding › Agentic Margin 0 Terminal-Bench Harbor Hub · Oct 6, 2026 | — |
| Coding › Web dev | #3 · Near-SOTA · Coding › Web dev Margin 1.8691588785046775 LMArena leaderboard dataset · Oct 13, 2026 | #94 · #94 in Coding › Web dev Margin 86.91588785046729 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #11 · #11 in Long context Margin 7.482993197278915 LMArena leaderboard dataset · Oct 13, 2026 | #87 · #87 in Long context Margin 59.183673469387756 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #1 · Co-SOTA · Vision Margin 0 Epoch AI benchmarking hub · Sep 28, 2026 | — |
| Factuality | #16 · #16 in Factuality Margin 12.68656716417911 LMArena leaderboard dataset · Oct 13, 2026 | #90 · #90 in Factuality Margin 67.91044776119404 LMArena leaderboard dataset · Oct 13, 2026 |
Claude Sonnet 5.5: $4.000000000000001 per 1M blended tokens.
Kimi K2 Thinking Turbo: price per 1M tokens is unset in the catalog.
Claude Sonnet 5.5: closed weights.
Kimi K2 Thinking Turbo: open weights.
General LLM: As of Oct 14, 2026, Claude Sonnet 5.5 leads Kimi K2 Thinking Turbo in General LLM at #27 against #81.
Reasoning: As of Oct 14, 2026, Claude Sonnet 5.5 leads Kimi K2 Thinking Turbo in Reasoning at #18 against #77.
Science: As of Oct 14, 2026, Claude Sonnet 5.5 leads Kimi K2 Thinking Turbo in Science at #3 against #60.
Coding › Web dev: As of Oct 14, 2026, Claude Sonnet 5.5 leads Kimi K2 Thinking Turbo in Coding › Web dev at #3 against #94.
Long context: As of Oct 14, 2026, Claude Sonnet 5.5 leads Kimi K2 Thinking Turbo in Long context at #11 against #87.
Factuality: As of Oct 14, 2026, Claude Sonnet 5.5 leads Kimi K2 Thinking Turbo in Factuality at #16 against #90.
Claude Sonnet 5.5 · Kimi K2 Thinking Turbo
Claude Sonnet 5.5 or Kimi K2 Thinking Turbo?
As of Oct 14, 2026, Claude Sonnet 5.5 leads Kimi K2 Thinking Turbo in 6 of 6 shared categories: General LLM, Reasoning, Science, Coding › Web dev, Long context, and Factuality.
Claude Sonnet 5.5 or Kimi K2 Thinking Turbo for General LLM?
As of Oct 14, 2026, Claude Sonnet 5.5 leads Kimi K2 Thinking Turbo in General LLM at #27 against #81.
Claude Sonnet 5.5 or Kimi K2 Thinking Turbo for Reasoning?
As of Oct 14, 2026, Claude Sonnet 5.5 leads Kimi K2 Thinking Turbo in Reasoning at #18 against #77.
Claude Sonnet 5.5 or Kimi K2 Thinking Turbo for Science?
As of Oct 14, 2026, Claude Sonnet 5.5 leads Kimi K2 Thinking Turbo in Science at #3 against #60.