GPT-5.4 vs Kimi K2 5 Thinking
As of Oct 15, 2026, GPT-5.4 leads Kimi K2 5 Thinking in 5 of 5 shared categories: General LLM, Reasoning, Coding › Web dev, Long context, and Factuality.
GPT-5.4
It used to be. Was SOTA in General LLM.
Kimi K2 5 Thinking
It used to be. Was SOTA in Coding › Web dev.
| Category | GPT-5.4 | Kimi K2 5 Thinking |
|---|---|---|
| General LLM | #28 · Was SOTA · General LLM Margin 19.04761904761905 LMArena leaderboard dataset · Oct 13, 2026 | #56 · #56 in General LLM Margin 38.095238095238095 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #29 · #29 in Reasoning Margin 20.54794520547945 LMArena leaderboard dataset · Oct 13, 2026 | #58 · #58 in Reasoning Margin 40.41095890410959 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #9 · #9 in Math Margin 17.777777777777757 Epoch AI benchmarking hub · Mar 5, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Science | #16 · #16 in Science Margin — Epoch AI benchmarking hub · Mar 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 | #55 · #55 in Coding › Web dev Margin 50.467289719626166 LMArena leaderboard dataset · Oct 13, 2026 | #61 · #61 in Coding › Web dev Margin 56.074766355140184 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #34 · #34 in Long context Margin 23.12925170068027 LMArena leaderboard dataset · Oct 13, 2026 | #57 · #57 in Long context Margin 38.775510204081634 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 9, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 9, 2026 |
| Factuality | #6 · Was SOTA · Factuality Margin 5.22388059701494 LMArena leaderboard dataset · Oct 13, 2026 | #58 · #58 in Factuality Margin 44.02985074626866 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #10 · #10 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Mar 5, 2026 | — |
GPT-5.4: $5.625 per 1M blended tokens.
Kimi K2 5 Thinking: price per 1M tokens is unset in the catalog.
GPT-5.4: closed weights.
Kimi K2 5 Thinking: open weights.
General LLM: As of Oct 15, 2026, GPT-5.4 leads Kimi K2 5 Thinking in General LLM at #28 against #56.
Reasoning: As of Oct 15, 2026, GPT-5.4 leads Kimi K2 5 Thinking in Reasoning at #29 against #58.
Coding › Web dev: As of Oct 15, 2026, GPT-5.4 leads Kimi K2 5 Thinking in Coding › Web dev at #55 against #61.
Long context: As of Oct 15, 2026, GPT-5.4 leads Kimi K2 5 Thinking in Long context at #34 against #57.
Factuality: As of Oct 15, 2026, GPT-5.4 leads Kimi K2 5 Thinking in Factuality at #6 against #58.
GPT-5.4 or Kimi K2 5 Thinking?
As of Oct 15, 2026, GPT-5.4 leads Kimi K2 5 Thinking in 5 of 5 shared categories: General LLM, Reasoning, Coding › Web dev, Long context, and Factuality.
GPT-5.4 or Kimi K2 5 Thinking for General LLM?
As of Oct 15, 2026, GPT-5.4 leads Kimi K2 5 Thinking in General LLM at #28 against #56.
GPT-5.4 or Kimi K2 5 Thinking for Reasoning?
As of Oct 15, 2026, GPT-5.4 leads Kimi K2 5 Thinking in Reasoning at #29 against #58.
GPT-5.4 or Kimi K2 5 Thinking for Coding › Web dev?
As of Oct 15, 2026, GPT-5.4 leads Kimi K2 5 Thinking in Coding › Web dev at #55 against #61.