Claude Opus 4.8 vs Kimi K3
As of Oct 14, 2026, Claude Opus 4.8 leads Kimi K3 in 1 of 8 shared categories: Vision.
Claude Opus 4.8
It used to be. Was SOTA in Coding › Web dev.
Kimi K3
Yes. Yes on General LLM (open weights); Reasoning (open weights). Not the overall leader.
| Category | Claude Opus 4.8 | Kimi K3 |
|---|---|---|
| General LLM | #20 · #20 in General LLM Margin 13.605442176870753 LMArena leaderboard dataset · Oct 13, 2026 | #13 · #13 in General LLM Margin 8.84353741496598 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #10 · #10 in Reasoning Margin 7.534246575342465 LMArena leaderboard dataset · Oct 13, 2026 | #7 · #7 in Reasoning Margin 5.479452054794521 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 | #27 · #27 in Science Margin — Epoch AI benchmarking hub · May 28, 2026 | #17 · #17 in Science Margin — Epoch AI benchmarking hub · Jul 16, 2026 |
| Coding | #12 · #12 in Coding Margin 59.09090909090909 Terminal-Bench Harbor Hub · Oct 6, 2026 | #— · Not enough data Margin — Scale Labs leaderboards · Oct 14, 2026 |
| Coding › Agentic | #12 · #12 in Coding › Agentic Margin 59.09090909090909 Terminal-Bench Harbor Hub · Oct 6, 2026 | — |
| Coding › Web dev | #33 · Was SOTA · Coding › Web dev Margin 29.90654205607477 LMArena leaderboard dataset · Oct 13, 2026 | #11 · Was SOTA · Coding › Web dev Margin 9.34579439252336 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #10 · Was SOTA · Long context Margin 6.802721088435391 LMArena leaderboard dataset · Oct 13, 2026 | #8 · Was SOTA · Long context Margin 5.442176870748298 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #13 · #13 in Vision Margin 36.842105263157904 Epoch AI benchmarking hub · May 28, 2026 | #22 · #22 in Vision Margin 60.526315789473685 Epoch AI benchmarking hub · Jul 16, 2026 |
| Factuality | #21 · #21 in Factuality Margin 16.417910447761187 LMArena leaderboard dataset · Oct 13, 2026 | #19 · #19 in Factuality Margin 14.925373134328368 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #12 · #12 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · May 28, 2026 | #8 · #8 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Jul 16, 2026 |
Claude Opus 4.8: $10 per 1M blended tokens.
Kimi K3: $4.125 per 1M blended tokens.
Claude Opus 4.8: closed weights.
Kimi K3: open weights.
General LLM: As of Oct 14, 2026, Kimi K3 leads Claude Opus 4.8 in General LLM at #13 against #20.
Reasoning: As of Oct 14, 2026, Kimi K3 leads Claude Opus 4.8 in Reasoning at #7 against #10.
Science: As of Oct 14, 2026, Kimi K3 leads Claude Opus 4.8 in Science at #17 against #27.
Coding › Web dev: As of Oct 14, 2026, Kimi K3 leads Claude Opus 4.8 in Coding › Web dev at #11 against #33.
Long context: As of Oct 14, 2026, Kimi K3 leads Claude Opus 4.8 in Long context at #8 against #10.
Vision: As of Oct 14, 2026, Claude Opus 4.8 leads Kimi K3 in Vision at #13 against #22.
Factuality: As of Oct 14, 2026, Kimi K3 leads Claude Opus 4.8 in Factuality at #19 against #21.
Abstraction (ARC): As of Oct 14, 2026, Kimi K3 leads Claude Opus 4.8 in Abstraction (ARC) at #8 against #12.
Claude Opus 4.8 or Kimi K3?
As of Oct 14, 2026, Claude Opus 4.8 leads Kimi K3 in 1 of 8 shared categories: Vision.
Claude Opus 4.8 or Kimi K3 for General LLM?
As of Oct 14, 2026, Kimi K3 leads Claude Opus 4.8 in General LLM at #13 against #20.
Claude Opus 4.8 or Kimi K3 for Reasoning?
As of Oct 14, 2026, Kimi K3 leads Claude Opus 4.8 in Reasoning at #7 against #10.
Claude Opus 4.8 or Kimi K3 for Science?
As of Oct 14, 2026, Kimi K3 leads Claude Opus 4.8 in Science at #17 against #27.