Anthropic · Claude · Fable · Mythos

Claude 4.5 Haiku

Released 15 Oct 2025 · 16 days after Claude 4.5 Sonnet

a new all-time high across the nine labs

Intelligence

7.4

#1 of 1 scored releases to that date

Price

$2.00

per 1M tokens, 3:1 in/out · $1 in / $5 out

Speed

—

not measured

Weights

Closed

US lab

Anthropic’s best score over time