Claude Fable 5 vs Claude Opus 4.1
As of Oct 14, 2026, Claude Fable 5 leads Claude Opus 4.1 in 6 of 6 shared categories: General LLM, Reasoning, Science, Coding › Web dev, Long context, and Factuality.
Claude Fable 5
Close. Near-SOTA in General LLM, rank #3.
Claude Opus 4.1
It used to be. Was SOTA in General LLM.
| Category | Claude Fable 5 | Claude Opus 4.1 |
|---|---|---|
| General LLM | #3 · Near-SOTA · General LLM Margin 2.040816326530617 LMArena leaderboard dataset · Oct 13, 2026 | #57 · Was SOTA · General LLM Margin 38.775510204081634 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #3 · Near-SOTA · Reasoning Margin 2.7397260273972535 LMArena leaderboard dataset · Oct 13, 2026 | #47 · Was SOTA · Reasoning Margin 32.87671232876713 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #27 · #27 in Math Margin 57.77777777777778 Epoch AI benchmarking hub · Aug 5, 2025 |
| Science | #56 · #56 in Science Margin — Epoch AI benchmarking hub · Jun 9, 2026 | #83 · #83 in Science Margin — Epoch AI benchmarking hub · Aug 5, 2025 |
| Coding | #6 · #6 in Coding Margin 31.818181818181813 Terminal-Bench Harbor Hub · Oct 6, 2026 | #— · Not enough data Margin — Epoch AI benchmarking hub · Aug 5, 2025 |
| Coding › Agentic | #6 · #6 in Coding › Agentic Margin 31.818181818181813 Terminal-Bench Harbor Hub · Oct 6, 2026 | — |
| Coding › Web dev | #17 · Was SOTA · Coding › Web dev Margin 14.953271028037378 LMArena leaderboard dataset · Oct 13, 2026 | #76 · Was SOTA · Coding › Web dev Margin 70.09345794392523 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #3 · Near-SOTA · Long context Margin 2.040816326530603 LMArena leaderboard dataset · Oct 13, 2026 | #44 · Was SOTA · Long context Margin 29.931972789115648 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #5 · Was SOTA · Vision Margin 15.78947368421052 Epoch AI benchmarking hub · Jun 9, 2026 | — |
| Factuality | #7 · Was SOTA · Factuality Margin 5.97014925373135 LMArena leaderboard dataset · Oct 13, 2026 | #74 · #74 in Factuality Margin 55.97014925373134 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #1 · #1 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Jun 9, 2026 | — |
Claude Fable 5: $20 per 1M blended tokens.
Claude Opus 4.1: $29.999999999999996 per 1M blended tokens.
Claude Fable 5: closed weights.
Claude Opus 4.1: closed weights.
General LLM: As of Oct 14, 2026, Claude Fable 5 leads Claude Opus 4.1 in General LLM at #3 against #57.
Reasoning: As of Oct 14, 2026, Claude Fable 5 leads Claude Opus 4.1 in Reasoning at #3 against #47.
Science: As of Oct 14, 2026, Claude Fable 5 leads Claude Opus 4.1 in Science at #56 against #83.
Coding › Web dev: As of Oct 14, 2026, Claude Fable 5 leads Claude Opus 4.1 in Coding › Web dev at #17 against #76.
Long context: As of Oct 14, 2026, Claude Fable 5 leads Claude Opus 4.1 in Long context at #3 against #44.
Factuality: As of Oct 14, 2026, Claude Fable 5 leads Claude Opus 4.1 in Factuality at #7 against #74.
Claude Fable 5 · Claude Opus 4.1
Claude Fable 5 or Claude Opus 4.1?
As of Oct 14, 2026, Claude Fable 5 leads Claude Opus 4.1 in 6 of 6 shared categories: General LLM, Reasoning, Science, Coding › Web dev, Long context, and Factuality.
Claude Fable 5 or Claude Opus 4.1 for General LLM?
As of Oct 14, 2026, Claude Fable 5 leads Claude Opus 4.1 in General LLM at #3 against #57.
Claude Fable 5 or Claude Opus 4.1 for Reasoning?
As of Oct 14, 2026, Claude Fable 5 leads Claude Opus 4.1 in Reasoning at #3 against #47.
Claude Fable 5 or Claude Opus 4.1 for Science?
As of Oct 14, 2026, Claude Fable 5 leads Claude Opus 4.1 in Science at #56 against #83.