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Claude 4.5 Sonnet (Reasoning)

New in 2026

Developed by Anthropic

API Pricing (per 1M tokens)

Input$3.00
Output$15.00

Intelligence Benchmarks

MMLU Pro87.5%
GPQA83.4%
Intelligence Index42.9
LivebenchN/A

Technical Specifications

Context Window1000K Tokens
Vision SupportYes
Tokens per Second78
Time to First Token (s)1.10
Modalities
textimagefile->text