Anthropic

Claude Sonnet 4 5 20250929 59K

Released 2025-09-29 · Data snapshot 2026-10-26

Overall score

52.1

Awaiting benchmarks (insufficient coverage)

Benchmark coverage

11.5%

3 third-party benchmarks

Context window

—

tokens

Input price

—

per million tokens

Output price

—

per million tokens

Dimension performance

Knowledge

52.1

Above averageBelow averageAnchored at 50 (reference models’ average); every 15 points ≈ one standard deviation

Reasoning1 items

Chess Puzzles10

Knowledge2 items

GPQA Diamond82.3

SimpleQA Verified30.7

Multiple reasoning tiers of the same benchmark take the best value; raw scores have different scales and are not comparable across benchmarks.