Claude Sonnet 4 vs Kimi K3
As of Oct 14, 2026, Claude Sonnet 4 leads Kimi K3 in 0 of 5 shared categories.
Claude Sonnet 4
#35 Best current rank: #35 in Math, as of Oct 14, 2026.
Kimi K3
Yes. Yes on General LLM (open weights); Reasoning (open weights). Not the overall leader.
| Category | Claude Sonnet 4 | Kimi K3 |
|---|---|---|
| General LLM | #126 · #126 in General LLM Margin 85.71428571428571 LMArena leaderboard dataset · Oct 13, 2026 | #13 · #13 in General LLM Margin 8.84353741496598 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #115 · #115 in Reasoning Margin 79.45205479452055 LMArena leaderboard dataset · Oct 13, 2026 | #7 · #7 in Reasoning Margin 5.479452054794521 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #35 · #35 in Math Margin 77.77777777777777 Epoch AI benchmarking hub · May 22, 2025 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Science | #97 · #97 in Science Margin — Epoch AI benchmarking hub · May 22, 2025 | #17 · #17 in Science Margin — Epoch AI benchmarking hub · Jul 16, 2026 |
| Coding | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #— · Not enough data Margin — Scale Labs leaderboards · Oct 14, 2026 |
| Coding › Web dev | — | #11 · Was SOTA · Coding › Web dev Margin 9.34579439252336 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #94 · #94 in Long context Margin 63.945578231292515 LMArena leaderboard dataset · Oct 13, 2026 | #8 · Was SOTA · Long context Margin 5.442176870748298 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 9, 2026 | #22 · #22 in Vision Margin 60.526315789473685 Epoch AI benchmarking hub · Jul 16, 2026 |
| Factuality | — | #19 · #19 in Factuality Margin 14.925373134328368 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #67 · #67 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · May 22, 2025 | #8 · #8 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Jul 16, 2026 |
Claude Sonnet 4: $6 per 1M blended tokens.
Kimi K3: $4.125 per 1M blended tokens.
Claude Sonnet 4: closed weights.
Kimi K3: open weights.
General LLM: As of Oct 14, 2026, Kimi K3 leads Claude Sonnet 4 in General LLM at #13 against #126.
Reasoning: As of Oct 14, 2026, Kimi K3 leads Claude Sonnet 4 in Reasoning at #7 against #115.
Science: As of Oct 14, 2026, Kimi K3 leads Claude Sonnet 4 in Science at #17 against #97.
Long context: As of Oct 14, 2026, Kimi K3 leads Claude Sonnet 4 in Long context at #8 against #94.
Abstraction (ARC): As of Oct 14, 2026, Kimi K3 leads Claude Sonnet 4 in Abstraction (ARC) at #8 against #67.
Claude Sonnet 4 or Kimi K3?
As of Oct 14, 2026, Claude Sonnet 4 leads Kimi K3 in 0 of 5 shared categories.
Claude Sonnet 4 or Kimi K3 for General LLM?
As of Oct 14, 2026, Kimi K3 leads Claude Sonnet 4 in General LLM at #13 against #126.
Claude Sonnet 4 or Kimi K3 for Reasoning?
As of Oct 14, 2026, Kimi K3 leads Claude Sonnet 4 in Reasoning at #7 against #115.
Claude Sonnet 4 or Kimi K3 for Science?
As of Oct 14, 2026, Kimi K3 leads Claude Sonnet 4 in Science at #17 against #97.