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AWS Machine Learning Blog· Aamna Najmi·· 9 d ago

Introducing Claude Haiku 5.5 on AWS

Introducing Claude Haiku 5.5 on AWS

AI summary

Claude Haiku 5.5 is now available on Amazon Bedrock and Claude Platform on AWS. According to Anthropic, it is the fastest, most efficient model in the Claude 5.5 family, built for subagents and high-volume, cost-sensitive work, and costs around 75% less than Claude Haiku 4.5 for most tasks. This post covers its improvements and how to get started.

Selection record

AdmittedSum of both 124 ≥ twice the threshold 120

Source tier
Official, first-hand; this tier's threshold is 60
Pre-filter
passed:发布Claude Haiku 5.5模型及Bedrock用法
Why it was chosen
AWS sets out how Haiku 5.5 is accessed on Bedrock and where it sits on cost, which helps in deciding its role in a multi-agent hierarchy.

A model scores each item twice, independently, against one written standard, out of 100. An item is admitted only when the two scores add up to twice the threshold. The threshold is set per source tier.

Source: AWS Machine Learning Blog · aws.amazon.com