GPT-5.5 vs Kimi K2 6
As of Oct 14, 2026, GPT-5.5 leads Kimi K2 6 in 6 of 7 shared categories: General LLM, Reasoning, Coding › Web dev, Long context, Vision, and Factuality.
GPT-5.5
It used to be. Was SOTA in General LLM.
Kimi K2 6
It used to be. Was SOTA in Coding › Web dev.
| Category | GPT-5.5 | Kimi K2 6 |
|---|---|---|
| General LLM | #21 · Was SOTA · General LLM Margin 14.285714285714292 LMArena leaderboard dataset · Oct 13, 2026 | #40 · #40 in General LLM Margin 27.21088435374149 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #25 · #25 in Reasoning Margin 17.808219178082197 LMArena leaderboard dataset · Oct 13, 2026 | #38 · #38 in Reasoning Margin 26.71232876712328 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 | #29 · #29 in Science Margin — Epoch AI benchmarking hub · Apr 20, 2026 |
| Coding | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #— · Not enough data Margin — Epoch AI benchmarking hub · Apr 20, 2026 |
| Coding › Web dev | #44 · #44 in Coding › Web dev Margin 40.18691588785047 LMArena leaderboard dataset · Oct 13, 2026 | #45 · #45 in Coding › Web dev Margin 41.12149532710281 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #23 · Was SOTA · Long context Margin 15.646258503401356 LMArena leaderboard dataset · Oct 13, 2026 | #37 · #37 in Long context Margin 25.17006802721089 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #10 · Was SOTA · Vision Margin 28.94736842105263 Epoch AI benchmarking hub · Apr 23, 2026 | #30 · #30 in Vision Margin 89.47368421052632 Epoch AI benchmarking hub · Apr 20, 2026 |
| Factuality | #5 · Was SOTA · Factuality Margin 4.477611940298502 LMArena leaderboard dataset · Oct 13, 2026 | #40 · #40 in Factuality Margin 30.59701492537313 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 6: $1.3399999999999999 per 1M blended tokens.
GPT-5.5: closed weights.
Kimi K2 6: open weights.
General LLM: As of Oct 14, 2026, GPT-5.5 leads Kimi K2 6 in General LLM at #21 against #40.
Reasoning: As of Oct 14, 2026, GPT-5.5 leads Kimi K2 6 in Reasoning at #25 against #38.
Science: As of Oct 14, 2026, Kimi K2 6 leads GPT-5.5 in Science at #29 against #30.
Coding › Web dev: As of Oct 14, 2026, GPT-5.5 leads Kimi K2 6 in Coding › Web dev at #44 against #45.
Long context: As of Oct 14, 2026, GPT-5.5 leads Kimi K2 6 in Long context at #23 against #37.
Vision: As of Oct 14, 2026, GPT-5.5 leads Kimi K2 6 in Vision at #10 against #30.
Factuality: As of Oct 14, 2026, GPT-5.5 leads Kimi K2 6 in Factuality at #5 against #40.
GPT-5.5 or Kimi K2 6?
As of Oct 14, 2026, GPT-5.5 leads Kimi K2 6 in 6 of 7 shared categories: General LLM, Reasoning, Coding › Web dev, Long context, Vision, and Factuality.
GPT-5.5 or Kimi K2 6 for General LLM?
As of Oct 14, 2026, GPT-5.5 leads Kimi K2 6 in General LLM at #21 against #40.
GPT-5.5 or Kimi K2 6 for Reasoning?
As of Oct 14, 2026, GPT-5.5 leads Kimi K2 6 in Reasoning at #25 against #38.
GPT-5.5 or Kimi K2 6 for Science?
As of Oct 14, 2026, Kimi K2 6 leads GPT-5.5 in Science at #29 against #30.