Claude Fable 5.1 vs Kimi K2 5 Thinking
As of Oct 15, 2026, Claude Fable 5.1 leads Kimi K2 5 Thinking in 5 of 5 shared categories: General LLM, Reasoning, Coding › Web dev, Long context, and Factuality.
Claude Fable 5.1
Yes. SOTA in Factuality (tied).
Kimi K2 5 Thinking
It used to be. Was SOTA in Coding › Web dev.
| Category | Claude Fable 5.1 | Kimi K2 5 Thinking |
|---|---|---|
| General LLM | #6 · Near-SOTA · General LLM Margin 3.191489361702125 LMArena leaderboard dataset · Oct 13, 2026 | #70 · #70 in General LLM Margin 37.234042553191486 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #5 · Near-SOTA · Reasoning Margin 3.191489361702125 LMArena leaderboard dataset · Oct 13, 2026 | #73 · #73 in Reasoning Margin 39.361702127659576 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #2 · Near-SOTA · Math Margin 2.2222222222222285 Epoch AI benchmarking hub · Sep 1, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Coding | #3 · Near-SOTA · Coding Margin 18.181818181818187 Terminal-Bench Harbor Hub · Oct 6, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Coding › Agentic | #3 · Near-SOTA · Coding › Agentic Margin 18.181818181818187 Terminal-Bench Harbor Hub · Oct 6, 2026 | — |
| Coding › Web dev | #5 · Near-SOTA · Coding › Web dev Margin 3.200000000000003 LMArena leaderboard dataset · Oct 13, 2026 | #67 · #67 in Coding › Web dev Margin 52.8 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #6 · Near-SOTA · Long context Margin 3.1914893617021107 LMArena leaderboard dataset · Oct 13, 2026 | #69 · #69 in Long context Margin 36.70212765957446 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #6 · #6 in Vision Margin 18.421052631578945 Epoch AI benchmarking hub · Sep 1, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 9, 2026 |
| Factuality | #1 · Co-SOTA · Factuality Margin 0 LMArena leaderboard dataset · Oct 13, 2026 | #71 · #71 in Factuality Margin 41.86046511627907 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #3 · #3 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Sep 1, 2026 | — |
Claude Fable 5.1: $20 per 1M blended tokens.
Kimi K2 5 Thinking: price per 1M tokens is unset in the catalog.
Claude Fable 5.1: closed weights.
Kimi K2 5 Thinking: open weights.
General LLM: As of Oct 15, 2026, Claude Fable 5.1 leads Kimi K2 5 Thinking in General LLM at #6 against #70.
Reasoning: As of Oct 15, 2026, Claude Fable 5.1 leads Kimi K2 5 Thinking in Reasoning at #5 against #73.
Coding › Web dev: As of Oct 15, 2026, Claude Fable 5.1 leads Kimi K2 5 Thinking in Coding › Web dev at #5 against #67.
Long context: As of Oct 15, 2026, Claude Fable 5.1 leads Kimi K2 5 Thinking in Long context at #6 against #69.
Factuality: As of Oct 15, 2026, Claude Fable 5.1 leads Kimi K2 5 Thinking in Factuality at #1 against #71.
Claude Fable 5.1 · Kimi K2 5 Thinking
Claude Fable 5.1 or Kimi K2 5 Thinking?
As of Oct 15, 2026, Claude Fable 5.1 leads Kimi K2 5 Thinking in 5 of 5 shared categories: General LLM, Reasoning, Coding › Web dev, Long context, and Factuality.
Claude Fable 5.1 or Kimi K2 5 Thinking for General LLM?
As of Oct 15, 2026, Claude Fable 5.1 leads Kimi K2 5 Thinking in General LLM at #6 against #70.
Claude Fable 5.1 or Kimi K2 5 Thinking for Reasoning?
As of Oct 15, 2026, Claude Fable 5.1 leads Kimi K2 5 Thinking in Reasoning at #5 against #73.
Claude Fable 5.1 or Kimi K2 5 Thinking for Coding › Web dev?
As of Oct 15, 2026, Claude Fable 5.1 leads Kimi K2 5 Thinking in Coding › Web dev at #5 against #67.