Claude Fable 5 vs GPT-5.1
As of Oct 15, 2026, Claude Fable 5 leads GPT-5.1 in 6 of 7 shared categories: General LLM, Reasoning, Coding › Web dev, Long context, Factuality, and Abstraction (ARC).
Claude Fable 5
Close. Near-SOTA in General LLM, rank #3.
GPT-5.1
#18 Best current rank: #18 in Math, as of Oct 15, 2026.
| Category | Claude Fable 5 | GPT-5.1 |
|---|---|---|
| General LLM | #3 · Near-SOTA · General LLM Margin 1.5957446808510696 LMArena leaderboard dataset · Oct 13, 2026 | #60 · #60 in General LLM Margin 31.914893617021278 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #3 · Near-SOTA · Reasoning Margin 2.1276595744680833 LMArena leaderboard dataset · Oct 13, 2026 | #62 · #62 in Reasoning Margin 33.51063829787235 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #18 · #18 in Math Margin 37.77777777777778 Epoch AI benchmarking hub · Nov 13, 2025 |
| Science | #56 · #56 in Science Margin — Epoch AI benchmarking hub · Jun 9, 2026 | #48 · #48 in Science Margin — Epoch AI benchmarking hub · Nov 13, 2025 |
| Coding | #6 · #6 in Coding Margin 31.818181818181813 Terminal-Bench Harbor Hub · Oct 6, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Coding › Agentic | #6 · #6 in Coding › Agentic Margin 31.818181818181813 Terminal-Bench Harbor Hub · Oct 6, 2026 | — |
| Coding › Web dev | #19 · Was SOTA · Coding › Web dev Margin 14.400000000000006 LMArena leaderboard dataset · Oct 13, 2026 | #82 · #82 in Coding › Web dev Margin 64.8 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #3 · Near-SOTA · Long context Margin 1.5957446808510696 LMArena leaderboard dataset · Oct 13, 2026 | #66 · #66 in Long context Margin 35.1063829787234 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #5 · Was SOTA · Vision Margin 15.78947368421052 Epoch AI benchmarking hub · Jun 9, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 9, 2026 |
| Factuality | #7 · Was SOTA · Factuality Margin 4.6511627906976685 LMArena leaderboard dataset · Oct 13, 2026 | #42 · #42 in Factuality Margin 25 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #1 · #1 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Jun 9, 2026 | #31 · #31 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Nov 13, 2025 |
Claude Fable 5: $20 per 1M blended tokens.
GPT-5.1: $3.4375000000000004 per 1M blended tokens.
Claude Fable 5: closed weights.
GPT-5.1: closed weights.
General LLM: As of Oct 15, 2026, Claude Fable 5 leads GPT-5.1 in General LLM at #3 against #60.
Reasoning: As of Oct 15, 2026, Claude Fable 5 leads GPT-5.1 in Reasoning at #3 against #62.
Science: As of Oct 15, 2026, GPT-5.1 leads Claude Fable 5 in Science at #48 against #56.
Coding › Web dev: As of Oct 15, 2026, Claude Fable 5 leads GPT-5.1 in Coding › Web dev at #19 against #82.
Long context: As of Oct 15, 2026, Claude Fable 5 leads GPT-5.1 in Long context at #3 against #66.
Factuality: As of Oct 15, 2026, Claude Fable 5 leads GPT-5.1 in Factuality at #7 against #42.
Abstraction (ARC): As of Oct 15, 2026, Claude Fable 5 leads GPT-5.1 in Abstraction (ARC) at #1 against #31.
Claude Fable 5 or GPT-5.1?
As of Oct 15, 2026, Claude Fable 5 leads GPT-5.1 in 6 of 7 shared categories: General LLM, Reasoning, Coding › Web dev, Long context, Factuality, and Abstraction (ARC).
Claude Fable 5 or GPT-5.1 for General LLM?
As of Oct 15, 2026, Claude Fable 5 leads GPT-5.1 in General LLM at #3 against #60.
Claude Fable 5 or GPT-5.1 for Reasoning?
As of Oct 15, 2026, Claude Fable 5 leads GPT-5.1 in Reasoning at #3 against #62.
Claude Fable 5 or GPT-5.1 for Science?
As of Oct 15, 2026, GPT-5.1 leads Claude Fable 5 in Science at #48 against #56.