Claude Fable 5.1 vs GPT-6 Astra
As of Oct 14, 2026, Claude Fable 5.1 leads GPT-6 Astra in 4 of 10 shared categories: General LLM, Reasoning, Long context, and Factuality.
Claude Fable 5.1
Yes. SOTA in co-SOTA in Factuality.
GPT-6 Astra
Yes. SOTA in Math and co-SOTA in Vision.
| Category | Claude Fable 5.1 | GPT-6 Astra |
|---|---|---|
| General LLM | #6 · Was SOTA · General LLM Margin 4.08163265306122 LMArena leaderboard dataset · Oct 13, 2026 | #25 · #25 in General LLM Margin 17.006802721088434 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #5 · Was SOTA · Reasoning Margin 4.109589041095887 LMArena leaderboard dataset · Oct 13, 2026 | #23 · #23 in Reasoning Margin 16.438356164383563 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #2 · Near-SOTA · Math Margin 2.2222222222222285 Epoch AI benchmarking hub · Sep 1, 2026 | #1 · SOTA · Math Margin 0 Epoch AI benchmarking hub · Sep 3, 2026 |
| Science | — | #2 · #2 in Science Margin — Epoch AI benchmarking hub · Sep 3, 2026 |
| Coding | #3 · Near-SOTA · Coding Margin 18.181818181818187 Terminal-Bench Harbor Hub · Oct 6, 2026 | #2 · Near-SOTA · Coding Margin 13.63636363636364 Terminal-Bench Harbor Hub · Oct 6, 2026 |
| Coding › Agentic | #3 · Near-SOTA · Coding › Agentic Margin 18.181818181818187 Terminal-Bench Harbor Hub · Oct 6, 2026 | #2 · Near-SOTA · Coding › Agentic Margin 13.63636363636364 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 | #2 · Near-SOTA · Coding › Web dev Margin 0.9345794392523317 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #6 · Was SOTA · Long context Margin 4.08163265306122 LMArena leaderboard dataset · Oct 13, 2026 | #22 · #22 in Long context Margin 14.965986394557817 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #6 · #6 in Vision Margin 18.421052631578945 Epoch AI benchmarking hub · Sep 1, 2026 | #1 · Co-SOTA · Vision Margin 0 Epoch AI benchmarking hub · Sep 3, 2026 |
| Factuality | #1 · Co-SOTA · Factuality Margin 0 LMArena leaderboard dataset · Oct 13, 2026 | #25 · #25 in Factuality Margin 19.402985074626883 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #3 · #3 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Sep 1, 2026 | #1 · #1 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Sep 3, 2026 |
Claude Fable 5.1: $20 per 1M blended tokens.
GPT-6 Astra: $20 per 1M blended tokens.
Claude Fable 5.1: closed weights.
GPT-6 Astra: closed weights.
General LLM: As of Oct 14, 2026, Claude Fable 5.1 leads GPT-6 Astra in General LLM at #6 against #25.
Reasoning: As of Oct 14, 2026, Claude Fable 5.1 leads GPT-6 Astra in Reasoning at #5 against #23.
Math: As of Oct 14, 2026, GPT-6 Astra leads Claude Fable 5.1 in Math at #1 against #2.
Coding: As of Oct 14, 2026, GPT-6 Astra leads Claude Fable 5.1 in Coding at #2 against #3.
Coding › Agentic: As of Oct 14, 2026, GPT-6 Astra leads Claude Fable 5.1 in Coding › Agentic at #2 against #3.
Coding › Web dev: As of Oct 14, 2026, GPT-6 Astra leads Claude Fable 5.1 in Coding › Web dev at #2 against #5.
Long context: As of Oct 14, 2026, Claude Fable 5.1 leads GPT-6 Astra in Long context at #6 against #22.
Vision: As of Oct 14, 2026, GPT-6 Astra leads Claude Fable 5.1 in Vision at #1 against #6.
Factuality: As of Oct 14, 2026, Claude Fable 5.1 leads GPT-6 Astra in Factuality at #1 against #25.
Abstraction (ARC): As of Oct 14, 2026, GPT-6 Astra leads Claude Fable 5.1 in Abstraction (ARC) at #1 against #3.
Claude Fable 5.1 · GPT-6 Astra
Claude Fable 5.1 or GPT-6 Astra?
As of Oct 14, 2026, Claude Fable 5.1 leads GPT-6 Astra in 4 of 10 shared categories: General LLM, Reasoning, Long context, and Factuality.
Claude Fable 5.1 or GPT-6 Astra for General LLM?
As of Oct 14, 2026, Claude Fable 5.1 leads GPT-6 Astra in General LLM at #6 against #25.
Claude Fable 5.1 or GPT-6 Astra for Reasoning?
As of Oct 14, 2026, Claude Fable 5.1 leads GPT-6 Astra in Reasoning at #5 against #23.
Claude Fable 5.1 or GPT-6 Astra for Math?
As of Oct 14, 2026, GPT-6 Astra leads Claude Fable 5.1 in Math at #1 against #2.