Claude Fable 5.1 vs GPT-5.4
As of Oct 14, 2026, Claude Fable 5.1 leads GPT-5.4 in 7 of 7 shared categories: General LLM, Reasoning, Math, Coding › Web dev, Long context, Factuality, and Abstraction (ARC).
| Category | Claude Fable 5.1 | GPT-5.4 |
|---|---|---|
| General LLM | #6 · Was SOTA · General LLM Margin 4.08163265306122 LMArena leaderboard dataset · Oct 13, 2026 | #28 · Was SOTA · General LLM Margin 19.04761904761905 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #5 · Was SOTA · Reasoning Margin 4.109589041095887 LMArena leaderboard dataset · Oct 13, 2026 | #29 · #29 in Reasoning Margin 20.54794520547945 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #2 · Near-SOTA · Math Margin 2.2222222222222285 Epoch AI benchmarking hub · Sep 1, 2026 | #9 · #9 in Math Margin 17.777777777777757 Epoch AI benchmarking hub · Mar 5, 2026 |
| Science | — | #16 · #16 in Science Margin — Epoch AI benchmarking hub · Mar 5, 2026 |
| Coding | #3 · Near-SOTA · Coding Margin 18.181818181818187 Terminal-Bench Harbor Hub · Oct 6, 2026 | #— · Not enough data Margin — Epoch AI benchmarking hub · Mar 5, 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 3.738317757009341 LMArena leaderboard dataset · Oct 13, 2026 | #55 · #55 in Coding › Web dev Margin 50.467289719626166 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #6 · Was SOTA · Long context Margin 4.08163265306122 LMArena leaderboard dataset · Oct 13, 2026 | #34 · #34 in Long context Margin 23.12925170068027 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 | #6 · Was SOTA · Factuality Margin 5.22388059701494 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #3 · #3 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Sep 1, 2026 | #10 · #10 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Mar 5, 2026 |
Claude Fable 5.1: $20 per 1M blended tokens.
GPT-5.4: $5.625 per 1M blended tokens.
Claude Fable 5.1: closed weights.
GPT-5.4: closed weights.
General LLM: As of Oct 14, 2026, Claude Fable 5.1 leads GPT-5.4 in General LLM at #6 against #28.
Reasoning: As of Oct 14, 2026, Claude Fable 5.1 leads GPT-5.4 in Reasoning at #5 against #29.
Math: As of Oct 14, 2026, Claude Fable 5.1 leads GPT-5.4 in Math at #2 against #9.
Coding › Web dev: As of Oct 14, 2026, Claude Fable 5.1 leads GPT-5.4 in Coding › Web dev at #5 against #55.
Long context: As of Oct 14, 2026, Claude Fable 5.1 leads GPT-5.4 in Long context at #6 against #34.
Factuality: As of Oct 14, 2026, Claude Fable 5.1 leads GPT-5.4 in Factuality at #1 against #6.
Abstraction (ARC): As of Oct 14, 2026, Claude Fable 5.1 leads GPT-5.4 in Abstraction (ARC) at #3 against #10.
Claude Fable 5.1 or GPT-5.4?
As of Oct 14, 2026, Claude Fable 5.1 leads GPT-5.4 in 7 of 7 shared categories: General LLM, Reasoning, Math, Coding › Web dev, Long context, Factuality, and Abstraction (ARC).
Claude Fable 5.1 or GPT-5.4 for General LLM?
As of Oct 14, 2026, Claude Fable 5.1 leads GPT-5.4 in General LLM at #6 against #28.
Claude Fable 5.1 or GPT-5.4 for Reasoning?
As of Oct 14, 2026, Claude Fable 5.1 leads GPT-5.4 in Reasoning at #5 against #29.
Claude Fable 5.1 or GPT-5.4 for Math?
As of Oct 14, 2026, Claude Fable 5.1 leads GPT-5.4 in Math at #2 against #9.