Claude Fable 5 vs Claude Opus 4.8
As of Oct 14, 2026, Claude Fable 5 leads Claude Opus 4.8 in 9 of 10 shared categories: General LLM, Reasoning, Coding, Coding › Agentic, Coding › Web dev, Long context, Vision, Factuality, and Abstraction (ARC).
Claude Fable 5
Close. Near-SOTA in General LLM, rank #3.
Claude Opus 4.8
It used to be. Was SOTA in Coding › Web dev.
| Category | Claude Fable 5 | Claude Opus 4.8 |
|---|---|---|
| General LLM | #3 · Near-SOTA · General LLM Margin 2.040816326530617 LMArena leaderboard dataset · Oct 13, 2026 | #20 · #20 in General LLM Margin 13.605442176870753 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #3 · Near-SOTA · Reasoning Margin 2.7397260273972535 LMArena leaderboard dataset · Oct 13, 2026 | #10 · #10 in Reasoning Margin 7.534246575342465 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Science | #56 · #56 in Science Margin — Epoch AI benchmarking hub · Jun 9, 2026 | #27 · #27 in Science Margin — Epoch AI benchmarking hub · May 28, 2026 |
| Coding | #6 · #6 in Coding Margin 31.818181818181813 Terminal-Bench Harbor Hub · Oct 6, 2026 | #12 · #12 in Coding Margin 59.09090909090909 Terminal-Bench Harbor Hub · Oct 6, 2026 |
| Coding › Agentic | #6 · #6 in Coding › Agentic Margin 31.818181818181813 Terminal-Bench Harbor Hub · Oct 6, 2026 | #12 · #12 in Coding › Agentic Margin 59.09090909090909 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 | #33 · Was SOTA · Coding › Web dev Margin 29.90654205607477 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #3 · Near-SOTA · Long context Margin 2.040816326530603 LMArena leaderboard dataset · Oct 13, 2026 | #10 · Was SOTA · Long context Margin 6.802721088435391 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #5 · Was SOTA · Vision Margin 15.78947368421052 Epoch AI benchmarking hub · Jun 9, 2026 | #13 · #13 in Vision Margin 36.842105263157904 Epoch AI benchmarking hub · May 28, 2026 |
| Factuality | #7 · Was SOTA · Factuality Margin 5.97014925373135 LMArena leaderboard dataset · Oct 13, 2026 | #21 · #21 in Factuality Margin 16.417910447761187 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #1 · #1 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Jun 9, 2026 | #12 · #12 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · May 28, 2026 |
Claude Fable 5: $20 per 1M blended tokens.
Claude Opus 4.8: $10 per 1M blended tokens.
Claude Fable 5: closed weights.
Claude Opus 4.8: closed weights.
General LLM: As of Oct 14, 2026, Claude Fable 5 leads Claude Opus 4.8 in General LLM at #3 against #20.
Reasoning: As of Oct 14, 2026, Claude Fable 5 leads Claude Opus 4.8 in Reasoning at #3 against #10.
Science: As of Oct 14, 2026, Claude Opus 4.8 leads Claude Fable 5 in Science at #27 against #56.
Coding: As of Oct 14, 2026, Claude Fable 5 leads Claude Opus 4.8 in Coding at #6 against #12.
Coding › Agentic: As of Oct 14, 2026, Claude Fable 5 leads Claude Opus 4.8 in Coding › Agentic at #6 against #12.
Coding › Web dev: As of Oct 14, 2026, Claude Fable 5 leads Claude Opus 4.8 in Coding › Web dev at #17 against #33.
Long context: As of Oct 14, 2026, Claude Fable 5 leads Claude Opus 4.8 in Long context at #3 against #10.
Vision: As of Oct 14, 2026, Claude Fable 5 leads Claude Opus 4.8 in Vision at #5 against #13.
Factuality: As of Oct 14, 2026, Claude Fable 5 leads Claude Opus 4.8 in Factuality at #7 against #21.
Abstraction (ARC): As of Oct 14, 2026, Claude Fable 5 leads Claude Opus 4.8 in Abstraction (ARC) at #1 against #12.
Claude Fable 5 · Claude Opus 4.8
Claude Fable 5 or Claude Opus 4.8?
As of Oct 14, 2026, Claude Fable 5 leads Claude Opus 4.8 in 9 of 10 shared categories: General LLM, Reasoning, Coding, Coding › Agentic, Coding › Web dev, Long context, Vision, Factuality, and Abstraction (ARC).
Claude Fable 5 or Claude Opus 4.8 for General LLM?
As of Oct 14, 2026, Claude Fable 5 leads Claude Opus 4.8 in General LLM at #3 against #20.
Claude Fable 5 or Claude Opus 4.8 for Reasoning?
As of Oct 14, 2026, Claude Fable 5 leads Claude Opus 4.8 in Reasoning at #3 against #10.
Claude Fable 5 or Claude Opus 4.8 for Science?
As of Oct 14, 2026, Claude Opus 4.8 leads Claude Fable 5 in Science at #27 against #56.