Claude Fable 5.1 vs Gemini 3.1 Pro Preview
As of Oct 14, 2026, Claude Fable 5.1 leads Gemini 3.1 Pro Preview in 7 of 8 shared categories: General LLM, Reasoning, Math, Coding › Web dev, Long context, Vision, and Factuality.
Claude Fable 5.1
Yes. SOTA in co-SOTA in Factuality.
Gemini 3.1 Pro Preview
Yes. Yes on Math (best per dollar). Not the overall leader.
| Category | Claude Fable 5.1 | Gemini 3.1 Pro Preview |
|---|---|---|
| General LLM | #6 · Was SOTA · General LLM Margin 4.08163265306122 LMArena leaderboard dataset · Oct 13, 2026 | #15 · Was SOTA · General LLM Margin 10.204081632653057 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #5 · Was SOTA · Reasoning Margin 4.109589041095887 LMArena leaderboard dataset · Oct 13, 2026 | #14 · Was SOTA · Reasoning Margin 10.273972602739732 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #2 · Near-SOTA · Math Margin 2.2222222222222285 Epoch AI benchmarking hub · Sep 1, 2026 | #3 · Near-SOTA · Math Margin 4.444444444444443 Epoch AI benchmarking hub · Feb 19, 2026 |
| Science | — | #7 · #7 in Science Margin — Epoch AI benchmarking hub · Feb 19, 2026 |
| 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 | #58 · #58 in Coding › Web dev Margin 53.271028037383175 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #6 · Was SOTA · Long context Margin 4.08163265306122 LMArena leaderboard dataset · Oct 13, 2026 | #12 · Was SOTA · Long context Margin 8.163265306122454 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #6 · #6 in Vision Margin 18.421052631578945 Epoch AI benchmarking hub · Sep 1, 2026 | #25 · Was SOTA · Vision Margin 68.42105263157896 Epoch AI benchmarking hub · Feb 19, 2026 |
| Factuality | #1 · Co-SOTA · Factuality Margin 0 LMArena leaderboard dataset · Oct 13, 2026 | #18 · #18 in Factuality Margin 14.179104477611943 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #3 · #3 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Sep 1, 2026 | #2 · #2 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Feb 19, 2026 |
Claude Fable 5.1: $20 per 1M blended tokens.
Gemini 3.1 Pro Preview: $4.5 per 1M blended tokens.
Claude Fable 5.1: closed weights.
Gemini 3.1 Pro Preview: closed weights.
General LLM: As of Oct 14, 2026, Claude Fable 5.1 leads Gemini 3.1 Pro Preview in General LLM at #6 against #15.
Reasoning: As of Oct 14, 2026, Claude Fable 5.1 leads Gemini 3.1 Pro Preview in Reasoning at #5 against #14.
Math: As of Oct 14, 2026, Claude Fable 5.1 leads Gemini 3.1 Pro Preview in Math at #2 against #3.
Coding › Web dev: As of Oct 14, 2026, Claude Fable 5.1 leads Gemini 3.1 Pro Preview in Coding › Web dev at #5 against #58.
Long context: As of Oct 14, 2026, Claude Fable 5.1 leads Gemini 3.1 Pro Preview in Long context at #6 against #12.
Vision: As of Oct 14, 2026, Claude Fable 5.1 leads Gemini 3.1 Pro Preview in Vision at #6 against #25.
Factuality: As of Oct 14, 2026, Claude Fable 5.1 leads Gemini 3.1 Pro Preview in Factuality at #1 against #18.
Abstraction (ARC): As of Oct 14, 2026, Gemini 3.1 Pro Preview leads Claude Fable 5.1 in Abstraction (ARC) at #2 against #3.
Claude Fable 5.1 · Gemini 3.1 Pro Preview
Claude Fable 5.1 or Gemini 3.1 Pro Preview?
As of Oct 14, 2026, Claude Fable 5.1 leads Gemini 3.1 Pro Preview in 7 of 8 shared categories: General LLM, Reasoning, Math, Coding › Web dev, Long context, Vision, and Factuality.
Claude Fable 5.1 or Gemini 3.1 Pro Preview for General LLM?
As of Oct 14, 2026, Claude Fable 5.1 leads Gemini 3.1 Pro Preview in General LLM at #6 against #15.
Claude Fable 5.1 or Gemini 3.1 Pro Preview for Reasoning?
As of Oct 14, 2026, Claude Fable 5.1 leads Gemini 3.1 Pro Preview in Reasoning at #5 against #14.
Claude Fable 5.1 or Gemini 3.1 Pro Preview for Math?
As of Oct 14, 2026, Claude Fable 5.1 leads Gemini 3.1 Pro Preview in Math at #2 against #3.