Claude Fable 5.1 vs GPT-4.5 Preview
As of Oct 14, 2026, Claude Fable 5.1 leads GPT-4.5 Preview in 5 of 5 shared categories: General LLM, Reasoning, Math, Long context, and Abstraction (ARC).
Claude Fable 5.1
Yes. SOTA in co-SOTA in Factuality.
GPT-4.5 Preview
It used to be. Was SOTA in General LLM.
| Category | Claude Fable 5.1 | GPT-4.5 Preview |
|---|---|---|
| General LLM | #6 · Was SOTA · General LLM Margin 4.08163265306122 LMArena leaderboard dataset · Oct 13, 2026 | #62 · Was SOTA · General LLM Margin 42.17687074829932 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #5 · Was SOTA · Reasoning Margin 4.109589041095887 LMArena leaderboard dataset · Oct 13, 2026 | #93 · Was SOTA · Reasoning Margin 64.38356164383562 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #2 · Near-SOTA · Math Margin 2.2222222222222285 Epoch AI benchmarking hub · Sep 1, 2026 | #38 · #38 in Math Margin 84.44444444444444 Epoch AI benchmarking hub · Feb 27, 2025 |
| Science | — | #92 · #92 in Science Margin — Epoch AI benchmarking hub · Feb 27, 2025 |
| 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 3.738317757009341 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Long context | #6 · Was SOTA · Long context Margin 4.08163265306122 LMArena leaderboard dataset · Oct 13, 2026 | #76 · Was SOTA · Long context Margin 51.70068027210884 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 | — |
| Abstraction (ARC) | #3 · #3 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Sep 1, 2026 | #83 · #83 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Feb 27, 2025 |
Claude Fable 5.1: $20 per 1M blended tokens.
GPT-4.5 Preview: price per 1M tokens is unset in the catalog.
Claude Fable 5.1: closed weights.
GPT-4.5 Preview: closed weights.
General LLM: As of Oct 14, 2026, Claude Fable 5.1 leads GPT-4.5 Preview in General LLM at #6 against #62.
Reasoning: As of Oct 14, 2026, Claude Fable 5.1 leads GPT-4.5 Preview in Reasoning at #5 against #93.
Math: As of Oct 14, 2026, Claude Fable 5.1 leads GPT-4.5 Preview in Math at #2 against #38.
Long context: As of Oct 14, 2026, Claude Fable 5.1 leads GPT-4.5 Preview in Long context at #6 against #76.
Abstraction (ARC): As of Oct 14, 2026, Claude Fable 5.1 leads GPT-4.5 Preview in Abstraction (ARC) at #3 against #83.
Claude Fable 5.1 · GPT-4.5 Preview
Claude Fable 5.1 or GPT-4.5 Preview?
As of Oct 14, 2026, Claude Fable 5.1 leads GPT-4.5 Preview in 5 of 5 shared categories: General LLM, Reasoning, Math, Long context, and Abstraction (ARC).
Claude Fable 5.1 or GPT-4.5 Preview for General LLM?
As of Oct 14, 2026, Claude Fable 5.1 leads GPT-4.5 Preview in General LLM at #6 against #62.
Claude Fable 5.1 or GPT-4.5 Preview for Reasoning?
As of Oct 14, 2026, Claude Fable 5.1 leads GPT-4.5 Preview in Reasoning at #5 against #93.
Claude Fable 5.1 or GPT-4.5 Preview for Math?
As of Oct 14, 2026, Claude Fable 5.1 leads GPT-4.5 Preview in Math at #2 against #38.