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Compare · 2026-10-15

Claude Fable 5 vs Claude Sonnet 4 20250514

As of Oct 15, 2026, Claude Fable 5 leads Claude Sonnet 4 20250514 in 2 of 2 shared categories: Science and Abstraction (ARC).

CategoryClaude Fable 5Claude Sonnet 4 20250514
General LLM
#3 · Near-SOTA · General LLM
Margin 1.5957446808510696
LMArena leaderboard dataset · Oct 13, 2026
—
Reasoning
#3 · Near-SOTA · Reasoning
Margin 2.1276595744680833
LMArena leaderboard dataset · Oct 13, 2026
#— · Not enough data
Margin —
Epoch AI benchmarking hub · May 22, 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
#74 · #74 in Science
Margin —
Epoch AI benchmarking hub · May 22, 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
#19 · Was SOTA · Coding › Web dev
Margin 14.400000000000006
LMArena leaderboard dataset · Oct 13, 2026
—
Long context
#3 · Near-SOTA · Long context
Margin 1.5957446808510696
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 4.6511627906976685
LMArena leaderboard dataset · Oct 13, 2026
—
Abstraction (ARC)
#1 · #1 in Abstraction (ARC)
Margin —
Epoch AI benchmarking hub · Jun 9, 2026
#49 · #49 in Abstraction (ARC)
Margin —
Epoch AI benchmarking hub · May 22, 2025
Price per 1M tokens

Claude Fable 5: $20 per 1M blended tokens.

Claude Sonnet 4 20250514: price per 1M tokens is unset in the catalog.

Open weights

Claude Fable 5: closed weights.

Claude Sonnet 4 20250514: closed weights.

Which to pick

Science: As of Oct 15, 2026, Claude Fable 5 leads Claude Sonnet 4 20250514 in Science at #56 against #74.

Abstraction (ARC): As of Oct 15, 2026, Claude Fable 5 leads Claude Sonnet 4 20250514 in Abstraction (ARC) at #1 against #49.

Claude Fable 5 · Claude Sonnet 4 20250514

Claude Fable 5 or Claude Sonnet 4 20250514?

As of Oct 15, 2026, Claude Fable 5 leads Claude Sonnet 4 20250514 in 2 of 2 shared categories: Science and Abstraction (ARC).

Claude Fable 5 or Claude Sonnet 4 20250514 for Science?

As of Oct 15, 2026, Claude Fable 5 leads Claude Sonnet 4 20250514 in Science at #56 against #74.

Claude Fable 5 or Claude Sonnet 4 20250514 for Abstraction (ARC)?

As of Oct 15, 2026, Claude Fable 5 leads Claude Sonnet 4 20250514 in Abstraction (ARC) at #1 against #49.