Compare · 2026-10-15
Claude Fable 5.1 vs GPT-4O
As of Oct 15, 2026, Claude Fable 5.1 leads GPT-4O in 2 of 2 shared categories: Math and Abstraction (ARC).
| Category | Claude Fable 5.1 | GPT-4O |
|---|---|---|
| General LLM | #6 · Near-SOTA · General LLM Margin 3.191489361702125 LMArena leaderboard dataset · Oct 13, 2026 | #— · Was SOTA · General LLM Margin — LMArena leaderboard dataset · Feb 21, 2025 |
| Reasoning | #5 · Near-SOTA · Reasoning Margin 3.191489361702125 LMArena leaderboard dataset · Oct 13, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Feb 6, 2025 |
| Math | #2 · Near-SOTA · Math Margin 2.2222222222222285 Epoch AI benchmarking hub · Sep 1, 2026 | #45 · #45 in Math Margin 100 Epoch AI benchmarking hub · Nov 20, 2024 |
| Science | — | #131 · #131 in Science Margin — Epoch AI benchmarking hub · Nov 20, 2024 |
| Coding | #3 · Near-SOTA · Coding Margin 18.181818181818187 Terminal-Bench Harbor Hub · Oct 6, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Feb 17, 2025 |
| 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 3.200000000000003 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Long context | #6 · Near-SOTA · Long context Margin 3.1914893617021107 LMArena leaderboard dataset · Oct 13, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Jan 22, 2025 |
| 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 | #— · Not enough data Margin — Epoch AI benchmarking hub · Aug 6, 2024 |
| Abstraction (ARC) | #3 · #3 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Sep 1, 2026 | #87 · #87 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Nov 20, 2024 |
Price per 1M tokens
Claude Fable 5.1: $20 per 1M blended tokens.
GPT-4O: $4.375000000000001 per 1M blended tokens.
Open weights
Claude Fable 5.1: closed weights.
GPT-4O: closed weights.
Which to pick
Math: As of Oct 15, 2026, Claude Fable 5.1 leads GPT-4O in Math at #2 against #45.
Abstraction (ARC): As of Oct 15, 2026, Claude Fable 5.1 leads GPT-4O in Abstraction (ARC) at #3 against #87.
Claude Fable 5.1 or GPT-4O?
As of Oct 15, 2026, Claude Fable 5.1 leads GPT-4O in 2 of 2 shared categories: Math and Abstraction (ARC).
Claude Fable 5.1 or GPT-4O for Math?
As of Oct 15, 2026, Claude Fable 5.1 leads GPT-4O in Math at #2 against #45.
Claude Fable 5.1 or GPT-4O for Abstraction (ARC)?
As of Oct 15, 2026, Claude Fable 5.1 leads GPT-4O in Abstraction (ARC) at #3 against #87.