Claude Fable 5 vs GPT-4.1
As of Oct 15, 2026, Claude Fable 5 leads GPT-4.1 in 6 of 6 shared categories: General LLM, Reasoning, Science, Long context, Factuality, and Abstraction (ARC).
Claude Fable 5
Close. Near-SOTA in General LLM, rank #3.
GPT-4.1
It used to be. Was SOTA in Long context.
| Category | Claude Fable 5 | GPT-4.1 |
|---|---|---|
| General LLM | #3 · Near-SOTA · General LLM Margin 2.040816326530617 LMArena leaderboard dataset · Oct 13, 2026 | #101 · #101 in General LLM Margin 68.70748299319727 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #3 · Near-SOTA · Reasoning Margin 2.7397260273972535 LMArena leaderboard dataset · Oct 13, 2026 | #102 · #102 in Reasoning Margin 70.54794520547945 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #39 · #39 in Math Margin 86.66666666666667 Epoch AI benchmarking hub · Apr 14, 2025 |
| Science | #56 · #56 in Science Margin — Epoch AI benchmarking hub · Jun 9, 2026 | #96 · #96 in Science Margin — Epoch AI benchmarking hub · Apr 14, 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 | #17 · Was SOTA · Coding › Web dev Margin 14.953271028037378 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Long context | #3 · Near-SOTA · Long context Margin 2.040816326530603 LMArena leaderboard dataset · Oct 13, 2026 | #95 · Was SOTA · Long context Margin 64.62585034013605 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 5.97014925373135 LMArena leaderboard dataset · Oct 13, 2026 | #103 · #103 in Factuality Margin 77.61194029850746 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #1 · #1 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Jun 9, 2026 | #85 · #85 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Apr 14, 2025 |
Claude Fable 5: $20 per 1M blended tokens.
GPT-4.1: $3.5 per 1M blended tokens.
Claude Fable 5: closed weights.
GPT-4.1: closed weights.
General LLM: As of Oct 15, 2026, Claude Fable 5 leads GPT-4.1 in General LLM at #3 against #101.
Reasoning: As of Oct 15, 2026, Claude Fable 5 leads GPT-4.1 in Reasoning at #3 against #102.
Science: As of Oct 15, 2026, Claude Fable 5 leads GPT-4.1 in Science at #56 against #96.
Long context: As of Oct 15, 2026, Claude Fable 5 leads GPT-4.1 in Long context at #3 against #95.
Factuality: As of Oct 15, 2026, Claude Fable 5 leads GPT-4.1 in Factuality at #7 against #103.
Abstraction (ARC): As of Oct 15, 2026, Claude Fable 5 leads GPT-4.1 in Abstraction (ARC) at #1 against #85.
Claude Fable 5 or GPT-4.1?
As of Oct 15, 2026, Claude Fable 5 leads GPT-4.1 in 6 of 6 shared categories: General LLM, Reasoning, Science, Long context, Factuality, and Abstraction (ARC).
Claude Fable 5 or GPT-4.1 for General LLM?
As of Oct 15, 2026, Claude Fable 5 leads GPT-4.1 in General LLM at #3 against #101.
Claude Fable 5 or GPT-4.1 for Reasoning?
As of Oct 15, 2026, Claude Fable 5 leads GPT-4.1 in Reasoning at #3 against #102.
Claude Fable 5 or GPT-4.1 for Science?
As of Oct 15, 2026, Claude Fable 5 leads GPT-4.1 in Science at #56 against #96.