Claude Fable 5 vs Claude Sonnet 4.5 20250929
As of Oct 14, 2026, Claude Fable 5 leads Claude Sonnet 4.5 20250929 in 2 of 2 shared categories: Science and Abstraction (ARC).
Claude Fable 5
Close. Near-SOTA in General LLM, rank #3.
Claude Sonnet 4.5 20250929
#36 Best recorded rank: #36 in Abstraction (ARC), as of Oct 14, 2026.
| Category | Claude Fable 5 | Claude Sonnet 4.5 20250929 |
|---|---|---|
| General LLM | #3 · Near-SOTA · General LLM Margin 2.040816326530617 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Reasoning | #3 · Near-SOTA · Reasoning Margin 2.7397260273972535 LMArena leaderboard dataset · Oct 13, 2026 | #— · Not enough data Margin — Epoch AI benchmarking hub · Sep 29, 2025 |
| Math | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | — |
| Science | #56 · #56 in Science Margin — Epoch AI benchmarking hub · Jun 9, 2026 | #66 · #66 in Science Margin — Epoch AI benchmarking hub · Sep 29, 2025 |
| Coding | #6 · #6 in Coding Margin 31.818181818181813 Terminal-Bench Harbor Hub · Oct 6, 2026 | — |
| Coding › Agentic | #6 · #6 in Coding › Agentic Margin 31.818181818181813 Terminal-Bench Harbor Hub · Oct 6, 2026 | — |
| Coding › Web dev | #17 · Was SOTA · Coding › Web dev Margin 14.953271028037378 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Long context | #3 · Near-SOTA · Long context Margin 2.040816326530603 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Vision | #5 · Was SOTA · Vision Margin 15.78947368421052 Epoch AI benchmarking hub · Jun 9, 2026 | — |
| Factuality | #7 · Was SOTA · Factuality Margin 5.97014925373135 LMArena leaderboard dataset · Oct 13, 2026 | #— · Not enough data Margin — Epoch AI benchmarking hub · Sep 29, 2025 |
| Abstraction (ARC) | #1 · #1 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Jun 9, 2026 | #36 · #36 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Sep 29, 2025 |
Claude Fable 5: $20 per 1M blended tokens.
Claude Sonnet 4.5 20250929: price per 1M tokens is unset in the catalog.
Claude Fable 5: closed weights.
Claude Sonnet 4.5 20250929: closed weights.
Science: As of Oct 14, 2026, Claude Fable 5 leads Claude Sonnet 4.5 20250929 in Science at #56 against #66.
Abstraction (ARC): As of Oct 14, 2026, Claude Fable 5 leads Claude Sonnet 4.5 20250929 in Abstraction (ARC) at #1 against #36.
Claude Fable 5 · Claude Sonnet 4.5 20250929
Claude Fable 5 or Claude Sonnet 4.5 20250929?
As of Oct 14, 2026, Claude Fable 5 leads Claude Sonnet 4.5 20250929 in 2 of 2 shared categories: Science and Abstraction (ARC).
Claude Fable 5 or Claude Sonnet 4.5 20250929 for Science?
As of Oct 14, 2026, Claude Fable 5 leads Claude Sonnet 4.5 20250929 in Science at #56 against #66.
Claude Fable 5 or Claude Sonnet 4.5 20250929 for Abstraction (ARC)?
As of Oct 14, 2026, Claude Fable 5 leads Claude Sonnet 4.5 20250929 in Abstraction (ARC) at #1 against #36.