Claude Opus 4.8 vs Kimi K2 5 Thinking
As of Oct 14, 2026, Claude Opus 4.8 leads Kimi K2 5 Thinking in 5 of 5 shared categories: General LLM, Reasoning, Coding › Web dev, Long context, and Factuality.
Claude Opus 4.8
It used to be. Was SOTA in Coding › Web dev.
Kimi K2 5 Thinking
It used to be. Was SOTA in Coding › Web dev.
| Category | Claude Opus 4.8 | Kimi K2 5 Thinking |
|---|---|---|
| General LLM | #20 · #20 in General LLM Margin 13.605442176870753 LMArena leaderboard dataset · Oct 13, 2026 | #56 · #56 in General LLM Margin 38.095238095238095 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #10 · #10 in Reasoning Margin 7.534246575342465 LMArena leaderboard dataset · Oct 13, 2026 | #58 · #58 in Reasoning Margin 40.41095890410959 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 | — |
| Coding | #12 · #12 in Coding Margin 59.09090909090909 Terminal-Bench Harbor Hub · Oct 6, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 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 | #61 · #61 in Coding › Web dev Margin 56.074766355140184 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #10 · Was SOTA · Long context Margin 6.802721088435391 LMArena leaderboard dataset · Oct 13, 2026 | #57 · #57 in Long context Margin 38.775510204081634 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #13 · #13 in Vision Margin 36.842105263157904 Epoch AI benchmarking hub · May 28, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 9, 2026 |
| Factuality | #21 · #21 in Factuality Margin 16.417910447761187 LMArena leaderboard dataset · Oct 13, 2026 | #58 · #58 in Factuality Margin 44.02985074626866 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #12 · #12 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · May 28, 2026 | — |
Claude Opus 4.8: $10 per 1M blended tokens.
Kimi K2 5 Thinking: price per 1M tokens is unset in the catalog.
Claude Opus 4.8: closed weights.
Kimi K2 5 Thinking: open weights.
General LLM: As of Oct 14, 2026, Claude Opus 4.8 leads Kimi K2 5 Thinking in General LLM at #20 against #56.
Reasoning: As of Oct 14, 2026, Claude Opus 4.8 leads Kimi K2 5 Thinking in Reasoning at #10 against #58.
Coding › Web dev: As of Oct 14, 2026, Claude Opus 4.8 leads Kimi K2 5 Thinking in Coding › Web dev at #33 against #61.
Long context: As of Oct 14, 2026, Claude Opus 4.8 leads Kimi K2 5 Thinking in Long context at #10 against #57.
Factuality: As of Oct 14, 2026, Claude Opus 4.8 leads Kimi K2 5 Thinking in Factuality at #21 against #58.
Claude Opus 4.8 · Kimi K2 5 Thinking
Claude Opus 4.8 or Kimi K2 5 Thinking?
As of Oct 14, 2026, Claude Opus 4.8 leads Kimi K2 5 Thinking in 5 of 5 shared categories: General LLM, Reasoning, Coding › Web dev, Long context, and Factuality.
Claude Opus 4.8 or Kimi K2 5 Thinking for General LLM?
As of Oct 14, 2026, Claude Opus 4.8 leads Kimi K2 5 Thinking in General LLM at #20 against #56.
Claude Opus 4.8 or Kimi K2 5 Thinking for Reasoning?
As of Oct 14, 2026, Claude Opus 4.8 leads Kimi K2 5 Thinking in Reasoning at #10 against #58.
Claude Opus 4.8 or Kimi K2 5 Thinking for Coding › Web dev?
As of Oct 14, 2026, Claude Opus 4.8 leads Kimi K2 5 Thinking in Coding › Web dev at #33 against #61.