AWS adds Claude Haiku 5.5 to Kiro in its US government cloud

Amazon Web Services (AWS) added Claude Haiku 5.5, a model from Anthropic, to Kiro in AWS GovCloud (US). Kiro is an AWS tool to write code, and GovCloud (US) is the AWS cloud for US government work. At this time, the three Claude 5.5 models are in Kiro there, and Haiku 5.5 is the fast one for work in large quantity.

What is new

Haiku 5.5 is for work in large quantity that must be fast. Developers can use it to make long text short, to sort requests and to make small changes in many files. AWS tells us that it can check work while Opus 5.5 and Sonnet 5.5 do the hard work.

The numbers

It has a 0.06x credit multiplier. Requests of more than 100K tokens (units of text) use 0.3x. It has a window of 1M tokens, which is the quantity of text it can read at one time. AWS gave no test results.

What is not known

AWS gave no multipliers for Opus 5.5 and Sonnet 5.5, and no price for a credit. It only tells us that Haiku 5.5 is a clear step up from Haiku 4.5. Users must update the tool and start it again to see the model.

Insight: GovCloud now holds models from competing makers

Before this, AWS added the OpenAI GPT-5.6 models to Bedrock in GovCloud (US). At this time, it adds Haiku 5.5 from Anthropic in Kiro. This seems a move by AWS to make its government cloud a position where model makers work together, and the buyer holds the selection. Teams that sell to the US government can change models without a new cloud.