Claude Haiku 4.5 is Anthropic's fastest and most cost-efficient model, delivering near-frontier intelligence at a fraction of the cost of larger Claude models. It matches Claude Sonnet 4's coding performance at one-third the cost and over twice the speed, scoring 73.3% on SWE-bench Verified — placing it among the world's top coding models. With support for extended thinking, tool use, computer use, and a 200K-token context window, it is ideal for real-time applications, parallelized sub-agents, and high-volume deployments.