Introducing Claude Haiku 4.5

What was recently frontier is now cheaper and faster. Claude Haiku 4.5, our latest small model, offers similar levels of coding performance but at one-third the cost and twice the speed of Claude Sonnet 4. From multiple agent projects to rapid prototyping, Haiku 4.5 makes the coding experience more responsive than ever before. Powered by Haiku 4.5, watch Claude Code design and ship a dark mode toggle for a food delivery app in sub-60 seconds. Learn more: https://www.anthropic.com/news/claude-haiku-4-5