Anthropic releases Claude Haiku 4.5
Claude Haiku 4.5 released — a small model at $1/$5 per 1M tokens, 73.3% on SWE-bench Verified (company-reported)
Why it matters
Anthropic said it gives coding performance similar to Sonnet 4, state of the art five months earlier, at one-third the cost and more than twice the speed; released under ASL-2 after testing found only limited CBRN risk
Source — Primary sources first; secondary reports are labelled “Press”
Officialanthropic.comhttps://www.anthropic.com/news/claude-haiku-4-5Added in Week 41, 2026 · See that week