Claude Opus 5 vs Kimi K2 5 Thinking
As of Oct 14, 2026, Claude Opus 5 leads Kimi K2 5 Thinking in 5 of 5 shared categories: General LLM, Reasoning, Coding › Web dev, Long context, and Factuality.
Claude Opus 5
Close. Near-SOTA in Factuality, rank #4.
Kimi K2 5 Thinking
It used to be. Was SOTA in Coding › Web dev.
| Category | Claude Opus 5 | Kimi K2 5 Thinking |
|---|---|---|
| General LLM | #11 · Was SOTA · General LLM Margin 7.482993197278915 LMArena leaderboard dataset · Oct 13, 2026 | #56 · #56 in General LLM Margin 38.095238095238095 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #9 · Was SOTA · Reasoning Margin 6.849315068493155 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 | #12 · #12 in Science Margin — Epoch AI benchmarking hub · Jul 24, 2026 | — |
| Coding | #4 · #4 in Coding Margin 22.727272727272734 Terminal-Bench Harbor Hub · Oct 6, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Coding › Agentic | #4 · #4 in Coding › Agentic Margin 22.727272727272734 Terminal-Bench Harbor Hub · Oct 6, 2026 | — |
| Coding › Web dev | #6 · Was SOTA · Coding › Web dev Margin 4.672897196261687 LMArena leaderboard dataset · Oct 13, 2026 | #61 · #61 in Coding › Web dev Margin 56.074766355140184 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #9 · Was SOTA · Long context Margin 6.122448979591837 LMArena leaderboard dataset · Oct 13, 2026 | #57 · #57 in Long context Margin 38.775510204081634 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #12 · #12 in Vision Margin 36.8421052631579 Epoch AI benchmarking hub · Jul 24, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 9, 2026 |
| Factuality | #4 · Near-SOTA · Factuality Margin 3.731343283582092 LMArena leaderboard dataset · Oct 13, 2026 | #58 · #58 in Factuality Margin 44.02985074626866 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #3 · #3 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Jul 24, 2026 | — |
Claude Opus 5: $10 per 1M blended tokens.
Kimi K2 5 Thinking: price per 1M tokens is unset in the catalog.
Claude Opus 5: closed weights.
Kimi K2 5 Thinking: open weights.
General LLM: As of Oct 14, 2026, Claude Opus 5 leads Kimi K2 5 Thinking in General LLM at #11 against #56.
Reasoning: As of Oct 14, 2026, Claude Opus 5 leads Kimi K2 5 Thinking in Reasoning at #9 against #58.
Coding › Web dev: As of Oct 14, 2026, Claude Opus 5 leads Kimi K2 5 Thinking in Coding › Web dev at #6 against #61.
Long context: As of Oct 14, 2026, Claude Opus 5 leads Kimi K2 5 Thinking in Long context at #9 against #57.
Factuality: As of Oct 14, 2026, Claude Opus 5 leads Kimi K2 5 Thinking in Factuality at #4 against #58.
Claude Opus 5 · Kimi K2 5 Thinking
Claude Opus 5 or Kimi K2 5 Thinking?
As of Oct 14, 2026, Claude Opus 5 leads Kimi K2 5 Thinking in 5 of 5 shared categories: General LLM, Reasoning, Coding › Web dev, Long context, and Factuality.
Claude Opus 5 or Kimi K2 5 Thinking for General LLM?
As of Oct 14, 2026, Claude Opus 5 leads Kimi K2 5 Thinking in General LLM at #11 against #56.
Claude Opus 5 or Kimi K2 5 Thinking for Reasoning?
As of Oct 14, 2026, Claude Opus 5 leads Kimi K2 5 Thinking in Reasoning at #9 against #58.
Claude Opus 5 or Kimi K2 5 Thinking for Coding › Web dev?
As of Oct 14, 2026, Claude Opus 5 leads Kimi K2 5 Thinking in Coding › Web dev at #6 against #61.