<p>AWS GovCloud (US) now offers Claude Haiku 5. 5, the fastest and most efficient model in the Claude 5.
⚡ Impact & Practical Takeaway
5 family, built for subagents and high-volume, cost-sensitive work. According to Anthropic, it costs around 75% less than Claude Haiku 4. 5 for most tasks. </p> <p>Claude Haiku 5. 5 is Anthropic's most capable Haiku yet, a significant step up from Haiku 4. 5 across coding, tool use, computer use, and agents. It's also the first Haiku with effort controls, so teams can tune cost against intelligence for each task. Haiku 5. 5 fits work where speed and cost matter most: real-time experiences like voice agents, live support, and in-app assistants, and high-volume tasks like classification, summarization, and pulling key fields from documents. It's also a fast, cost-efficient subagent. A more capable model like Claude Opus 5. 5 can plan the work and hand off well-defined coding, tool use, and browser automation tasks to Haiku, making it practical to run many agents in parallel.