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Every recorded change for this model by Anthropic, newest first. Back to the entity page →
13 events
Claude Sonnet 4.5: reasoning changed from false to true
Claude Sonnet 4.5 scores 28.79% on Terminal-Bench
Claude Sonnet 4.5 scores 70.47% on τ²-bench
Claude Sonnet 4.5 scores 65.2% on MMMU-Pro
Claude Sonnet 4.5 scores 42.65% on IFBench
Claude Sonnet 4.5 scores 7.23% on Humanity's Last Exam
Claude Sonnet 4.5 scores 72.73% on GPQA
Claude Sonnet 4.5 scores 19.34 on Artificial Analysis Intelligence Index
Claude Sonnet 4.5: reasoning changed from true to false
Anthropic API lists Claude Sonnet 4.5 at $1.5 in / $7.5 out per 1M tokens
Anthropic API lists Claude Sonnet 4.5 at $3 in / $15 out per 1M tokens
Anthropic API lists Claude Sonnet 4.5 at $3 in / $15 out per 1M tokens
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