GPT-5.5 vs Kimi K2 Thinking Turbo
As of Oct 14, 2026, GPT-5.5 leads Kimi K2 Thinking Turbo in 6 of 6 shared categories: General LLM, Reasoning, Science, Coding › Web dev, Long context, and Factuality.
GPT-5.5
It used to be. Was SOTA in General LLM.
Kimi K2 Thinking Turbo
It used to be. Was SOTA in Coding › Web dev.
| Category | GPT-5.5 | Kimi K2 Thinking Turbo |
|---|---|---|
| General LLM | #21 · Was SOTA · General LLM Margin 14.285714285714292 LMArena leaderboard dataset · Oct 13, 2026 | #81 · #81 in General LLM Margin 55.10204081632653 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #25 · #25 in Reasoning Margin 17.808219178082197 LMArena leaderboard dataset · Oct 13, 2026 | #77 · #77 in Reasoning Margin 53.42465753424658 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Science | #30 · #30 in Science Margin — Epoch AI benchmarking hub · Apr 23, 2026 | #60 · #60 in Science Margin — Epoch AI benchmarking hub · Nov 6, 2025 |
| Coding | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Coding › Web dev | #44 · #44 in Coding › Web dev Margin 40.18691588785047 LMArena leaderboard dataset · Oct 13, 2026 | #94 · #94 in Coding › Web dev Margin 86.91588785046729 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #23 · Was SOTA · Long context Margin 15.646258503401356 LMArena leaderboard dataset · Oct 13, 2026 | #87 · #87 in Long context Margin 59.183673469387756 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #10 · Was SOTA · Vision Margin 28.94736842105263 Epoch AI benchmarking hub · Apr 23, 2026 | — |
| Factuality | #5 · Was SOTA · Factuality Margin 4.477611940298502 LMArena leaderboard dataset · Oct 13, 2026 | #90 · #90 in Factuality Margin 67.91044776119404 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #7 · #7 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Apr 23, 2026 | — |
GPT-5.5: $11.25 per 1M blended tokens.
Kimi K2 Thinking Turbo: price per 1M tokens is unset in the catalog.
GPT-5.5: closed weights.
Kimi K2 Thinking Turbo: open weights.
General LLM: As of Oct 14, 2026, GPT-5.5 leads Kimi K2 Thinking Turbo in General LLM at #21 against #81.
Reasoning: As of Oct 14, 2026, GPT-5.5 leads Kimi K2 Thinking Turbo in Reasoning at #25 against #77.
Science: As of Oct 14, 2026, GPT-5.5 leads Kimi K2 Thinking Turbo in Science at #30 against #60.
Coding › Web dev: As of Oct 14, 2026, GPT-5.5 leads Kimi K2 Thinking Turbo in Coding › Web dev at #44 against #94.
Long context: As of Oct 14, 2026, GPT-5.5 leads Kimi K2 Thinking Turbo in Long context at #23 against #87.
Factuality: As of Oct 14, 2026, GPT-5.5 leads Kimi K2 Thinking Turbo in Factuality at #5 against #90.
GPT-5.5 · Kimi K2 Thinking Turbo
GPT-5.5 or Kimi K2 Thinking Turbo?
As of Oct 14, 2026, GPT-5.5 leads Kimi K2 Thinking Turbo in 6 of 6 shared categories: General LLM, Reasoning, Science, Coding › Web dev, Long context, and Factuality.
GPT-5.5 or Kimi K2 Thinking Turbo for General LLM?
As of Oct 14, 2026, GPT-5.5 leads Kimi K2 Thinking Turbo in General LLM at #21 against #81.
GPT-5.5 or Kimi K2 Thinking Turbo for Reasoning?
As of Oct 14, 2026, GPT-5.5 leads Kimi K2 Thinking Turbo in Reasoning at #25 against #77.
GPT-5.5 or Kimi K2 Thinking Turbo for Science?
As of Oct 14, 2026, GPT-5.5 leads Kimi K2 Thinking Turbo in Science at #30 against #60.