Models · Updated 8 Oct, 11:56 am IST

Anthropic’s Claude Haiku 5.5 available on AWS via Amazon Bedrock and Claude Platform

Why it matters for readers: If you use AI tools, Haiku 5.5 means some tasks could run much faster and cheaper, especially on AWS.

Claude Haiku 5.5 is Anthropic’s fastest and most efficient Haiku model, designed for subagents and high-volume, cost-sensitive workloads.1 3
Anthropic and reporting say Haiku 5.5 costs around 75% less on average than Haiku 4.5 for most tasks, with much lower prices for prompts up to 100,000 tokens.1 2 3
Haiku 5.5 is available through Amazon Bedrock with AWS regional data residency and integrates with AWS IAM, CloudTrail, CloudWatch, and Bedrock guardrails, and also via the Claude Platform on AWS with unified billing.3
Anthropic added 'effort controls' in Haiku 5.5 to let users trade off cost against intelligence per task, and the model uses an updated tokenizer that increases token counts versus Haiku 4.5.2 3 4
Anthropic also cut some Sonnet 5.5 prices (cache reads) and introduced monthly API credits for some subscribers alongside the Haiku 5.5 launch.1 2

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7 Oct, 11:31 pm · Hacker News (100+ points)
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