Anthropic has just announced Claude Haiku 4.5, a new lightweight AI model that’s fast enough to power real-time experiences and smart enough to rival its bigger sibling, Claude Sonnet 4.5. And in a major move, it’s available for free to all Claude.ai users starting today.

Just two weeks after rolling out Sonnet 4.5, Anthropic's latest launch promises superior intelligence wrapped in a lightweight package that supports chatting, coding and workflows.

Meet Haiku 4.5

Small but mighty, Claude Haiku 4.5 outperforms Sonnet 4.5 making Claude for Chrome faster than ever. Here's where it shines: • Latency / Speed: Haiku 4.5 is significantly faster than Sonnet 4.5. It’s built for low-latency use cases like real-time chatbots and agents. • Parallel execution: You can deploy multiple Haiku 4.5

See Full Page