Grok 4.3 vs Kimi K3
As of Oct 15, 2026, Grok 4.3 leads Kimi K3 in 0 of 7 shared categories.
Grok 4.3
#32 Best current rank: #32 in Vision, as of Oct 15, 2026.
Kimi K3
Yes. Yes on General LLM (open weights); Reasoning (open weights). Not the overall leader.
| Category | Grok 4.3 | Kimi K3 |
|---|---|---|
| General LLM | #85 · #85 in General LLM Margin 45.212765957446805 LMArena leaderboard dataset · Oct 13, 2026 | #13 · #13 in General LLM Margin 6.914893617021278 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #96 · #96 in Reasoning Margin 51.59574468085106 LMArena leaderboard dataset · Oct 13, 2026 | #7 · #7 in Reasoning Margin 4.255319148936167 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 | #41 · #41 in Science Margin — Epoch AI benchmarking hub · Apr 17, 2026 | #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 | #95 · #95 in Coding › Web dev Margin 75.2 LMArena leaderboard dataset · Oct 13, 2026 | #12 · Was SOTA · Coding › Web dev Margin 8.799999999999997 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #94 · #94 in Long context Margin 50 LMArena leaderboard dataset · Oct 13, 2026 | #8 · Was SOTA · Long context Margin 4.255319148936167 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #32 · #32 in Vision Margin 97.36842105263158 Epoch AI benchmarking hub · Apr 17, 2026 | #22 · #22 in Vision Margin 60.526315789473685 Epoch AI benchmarking hub · Jul 16, 2026 |
| Factuality | #111 · #111 in Factuality Margin 65.11627906976744 LMArena leaderboard dataset · Oct 13, 2026 | #22 · #22 in Factuality Margin 13.372093023255815 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | — | #8 · #8 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Jul 16, 2026 |
Grok 4.3: $1.5625000000000002 per 1M blended tokens.
Kimi K3: $4.109999999999999 per 1M blended tokens.
Grok 4.3: closed weights.
Kimi K3: open weights.
General LLM: As of Oct 15, 2026, Kimi K3 leads Grok 4.3 in General LLM at #13 against #85.
Reasoning: As of Oct 15, 2026, Kimi K3 leads Grok 4.3 in Reasoning at #7 against #96.
Science: As of Oct 15, 2026, Kimi K3 leads Grok 4.3 in Science at #17 against #41.
Coding › Web dev: As of Oct 15, 2026, Kimi K3 leads Grok 4.3 in Coding › Web dev at #12 against #95.
Long context: As of Oct 15, 2026, Kimi K3 leads Grok 4.3 in Long context at #8 against #94.
Vision: As of Oct 15, 2026, Kimi K3 leads Grok 4.3 in Vision at #22 against #32.
Factuality: As of Oct 15, 2026, Kimi K3 leads Grok 4.3 in Factuality at #22 against #111.
Grok 4.3 or Kimi K3?
As of Oct 15, 2026, Grok 4.3 leads Kimi K3 in 0 of 7 shared categories.
Grok 4.3 or Kimi K3 for General LLM?
As of Oct 15, 2026, Kimi K3 leads Grok 4.3 in General LLM at #13 against #85.
Grok 4.3 or Kimi K3 for Reasoning?
As of Oct 15, 2026, Kimi K3 leads Grok 4.3 in Reasoning at #7 against #96.
Grok 4.3 or Kimi K3 for Science?
As of Oct 15, 2026, Kimi K3 leads Grok 4.3 in Science at #17 against #41.