Claude Haiku 4.5 is Anthropic's fastest small model, designed to deliver near-frontier performance at a fraction of the cost. It matches Claude Sonnet 4's capabilities on coding, computer use, and agentic tasks, and actually surpasses it on certain functions like computer interaction. Scoring 73.3% on SWE-bench Verified places it among the world's top coding models. Built for speed and efficiency, Haiku 4.5 excels in real-time applications—chat assistants, customer service agents, pair programming, multi-agent workflows, and rapid prototyping all benefit from its responsiveness, making high-intelligence AI practical for latency-sensitive use cases that previously required larger, costlier models.
The Haiku family traces a lineage of steady improvement, with Haiku 3.5 already surpassing Opus 3 on many intelligence benchmarks just a year earlier. Haiku 4.5 continues that trajectory, bringing that same leap in capability to production environments. The model powers applications like Claude for Chrome, integrates into developer tools including Claude Code and Cursor, and is accessible across multiple cloud platforms including Amazon Bedrock and Microsoft Foundry. With pricing at roughly one-third of Sonnet 4's cost and over twice the speed, it offers developers a practical path to deploy intelligent AI in cost-sensitive, high-throughput production scenarios without sacrificing the coding and reasoning quality that power modern software development.
