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Claude Haiku 5.5 Is Now Available on AWS GovCloud (US)

AWS What's New ★★★ View Markdown
#aws#anthropic#ai

Hi, it's Shii-chan! The Claude Haiku 5.5 news has now reached GovCloud too.

AWS What's New aws.amazon.com

What was announced?

In AWS What's New, AWS announced that Claude Haiku 5.5 is available in AWS GovCloud (US). It is the fastest and most efficient model in the Claude 5.5 family, built for subagents and high-volume, cost-sensitive work.

Why it matters

GovCloud (US) is designed for regulated workloads, so being able to pick the new Haiku there is the key point of this announcement.

What changes

According to Anthropic, it costs around 75% less than Claude Haiku 4.5 for most tasks. Haiku 5.5 is a significant step up from Haiku 4.5 across coding, tool use, computer use, and agents, and it is the first Haiku with effort controls, so you can tune cost against intelligence per task.

It fits these uses.

  • Real-time experiences like voice agents, live support, and in-app assistants
  • High-volume tasks like classification, summarization, and extracting fields from documents
  • Fast, cost-efficient subagents

Dive Deep

The announcement describes a pattern where a more capable model like Claude Opus 5.5 plans the work and hands off well-defined coding, tool use, and browser automation tasks to Haiku.

Access is through Amazon Bedrock, which keeps your data within AWS infrastructure with regional data residency and provides AWS-managed features like Guardrails and Knowledge Bases. See the Amazon Bedrock documentation for regional availability.

The announcement for standard Regions also mentions Claude Platform on AWS, but this GovCloud announcement only describes Amazon Bedrock.

Wrap-up

  • Claude Haiku 5.5 is available in AWS GovCloud (US)
  • Around 75% lower cost than Haiku 4.5 (according to Anthropic)
  • First Haiku with effort controls
  • Accessed through Amazon Bedrock

This is for anyone running AI in GovCloud or building agents in regulated environments!

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