Claude Fable 5.1 vs O4 Mini
As of Oct 14, 2026, Claude Fable 5.1 leads O4 Mini in 5 of 5 shared categories: General LLM, Reasoning, Math, Factuality, and Abstraction (ARC).
| Category | Claude Fable 5.1 | O4 Mini |
|---|---|---|
| General LLM | #6 · Was SOTA · General LLM Margin 4.08163265306122 LMArena leaderboard dataset · Oct 13, 2026 | #125 · #125 in General LLM Margin 85.03401360544217 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #5 · Was SOTA · Reasoning Margin 4.109589041095887 LMArena leaderboard dataset · Oct 13, 2026 | #129 · #129 in Reasoning Margin 89.04109589041096 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #2 · Near-SOTA · Math Margin 2.2222222222222285 Epoch AI benchmarking hub · Sep 1, 2026 | #23 · Was SOTA · Math Margin 48.888888888888886 Epoch AI benchmarking hub · Apr 16, 2025 |
| Science | — | #70 · #70 in Science Margin — Epoch AI benchmarking hub · Apr 16, 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 | #— · Not enough data Margin — LMArena leaderboard dataset · Jul 7, 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 | #122 · #122 in Factuality Margin 91.7910447761194 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #3 · #3 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Sep 1, 2026 | #39 · #39 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Apr 16, 2025 |
Claude Fable 5.1: $20 per 1M blended tokens.
O4 Mini: $1.9250000000000003 per 1M blended tokens.
Claude Fable 5.1: closed weights.
O4 Mini: closed weights.
General LLM: As of Oct 14, 2026, Claude Fable 5.1 leads O4 Mini in General LLM at #6 against #125.
Reasoning: As of Oct 14, 2026, Claude Fable 5.1 leads O4 Mini in Reasoning at #5 against #129.
Math: As of Oct 14, 2026, Claude Fable 5.1 leads O4 Mini in Math at #2 against #23.
Factuality: As of Oct 14, 2026, Claude Fable 5.1 leads O4 Mini in Factuality at #1 against #122.
Abstraction (ARC): As of Oct 14, 2026, Claude Fable 5.1 leads O4 Mini in Abstraction (ARC) at #3 against #39.
Claude Fable 5.1 or O4 Mini?
As of Oct 14, 2026, Claude Fable 5.1 leads O4 Mini in 5 of 5 shared categories: General LLM, Reasoning, Math, Factuality, and Abstraction (ARC).
Claude Fable 5.1 or O4 Mini for General LLM?
As of Oct 14, 2026, Claude Fable 5.1 leads O4 Mini in General LLM at #6 against #125.
Claude Fable 5.1 or O4 Mini for Reasoning?
As of Oct 14, 2026, Claude Fable 5.1 leads O4 Mini in Reasoning at #5 against #129.
Claude Fable 5.1 or O4 Mini for Math?
As of Oct 14, 2026, Claude Fable 5.1 leads O4 Mini in Math at #2 against #23.