Claude Haiku 5.5

Claude Haiku 5.5 is a new small model optimized for high-volume, cost-sensitive and speed-sensitive tasks - summaries, compaction, database queries, classification, subagents for coding, live support, and browser-based work. It delivers large reductions in price (up to ~90% lower for requests under 100k tokens and substantially lower on average) and is Anthropic’s fastest Haiku-class model. Benchmarks show big gains over Haiku 4.5 across knowledge-work, computer-use, visual-reasoning and multidisciplinary-reasoning suites, and an adjustable effort setting lets users trade cost for capability. Early customer evaluations report lower latency (Asana: ~30% latency reduction), higher task accuracy (HubSpot CRM suite: 92.8%), and improved query performance versus Haiku 4.5 (AlphaSense: 0.84 vs 0.76), while larger models (Sonnet/Opus 5.5) remain superior for complex agentic coding.

Deployment and ecosystem updates include lower cache-read pricing for Sonnet 5.5 (50% cut), new monthly API credits for Max and Team subscribers, and beta support for computer- and browser-use in the Python and TypeScript SDKs. Safety and alignment are improved relative to Haiku 4.5, with stricter cybersecurity safeguards (allowing defensive but blocking offensive techniques) and the same biology restrictions used across Opus/Sonnet. Haiku 5.5 is generally positioned as a fast, inexpensive subagent and high-throughput workhorse available now on major cloud providers and the Claude Platform.