Claude 4.5 Sonnet

Reasoning

Creator

Anthropic

Released

2025-09-29

Intelligence

43.0

Artificial Analysis Index

Coding

38.6

Artificial Analysis Index

In $/1M

$3.75

input tokens

Out $/1M

$15.00

output tokens

Blended $/1M

$6.56

3:1 blended

Speed

61

tokens / sec

Benchmark breakdown

Independent evaluation scores, normalized to 0–100.

GPQA Diamond
83
Humanity’s Last Exam
17
MMLU-Pro
88
SciCode
45
LiveCodeBench
71
MATH-500
AIME 2025
88
τ²-Bench (agentic)
78
Terminal-Bench Hard
36
IFBench
57
Via Artificial Analysis