Anthropic's Claude Sonnet 4.5 model release in the Claude Sonnet line.
Pricing
Official site · Jun 27, 2026, 6:41 AM
Input / 1M
$3.00
Output / 1M
$15.00
Cached input / 1M
$0.30
Standard public API pricing on Anthropic's official site; treated as a text model per request.
Anthropic's official pricing page publicly lists Claude Sonnet 4.5 with token-based API pricing: $3 per 1M input tokens and $15 per 1M output tokens. Prompt-caching cached input pricing is also public and recorded here as $0.30 per 1M cached input tokens.
Model Intelligence
Arena ranking
8
Benchmarkable
Yes
Model level
release
Intelligence Index
8.3
Coding Index
26
MMLU Pro
0.75
GPQA
0.56
HLE
0.04
SciCode
0.32
MATH-500
0.7
AIME
0.1
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