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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 Pro
87.5%
GPQA
83.4%
Intelligence Index
42.9
Livebench
N/A
Technical Specifications
Context Window
1000K Tokens
Vision Support
Yes
Tokens per Second
78
Time to First Token (s)
1.10
Modalities
text
image
file->text