Claude Haiku 5.5 Now Available on AWS: Fast, Cost-Efficient Model for High-Volume Tasks
Claude Haiku 5.5, Anthropic's fastest and most efficient model in the 5.5 family, is now available via Amazon Bedrock and Claude Platform on AWS. It offers new effort controls, improved coding and agentic capabilities, and operates at roughly 75% lower cost than Haiku 4.5, making it ideal for high-volume, cost-sensitive workloads and subagent orchestration.
What changed?
Claude Haiku 5.5 is now available on Amazon Bedrock (in US, EU, AU, JP, and global inference regions) and Claude Platform on AWS in North America. This model is the fastest and most efficient in the Claude 5.5 series, aimed at subagents and high-volume, cost-sensitive tasks. Haiku 5.5 adds effort controls, a feature allowing users to tune cost vs. intelligence per task rather than per workload. According to Anthropic, it costs about 75% less than Claude Haiku 4.5 for most jobs. The model introduces better coding, tool use, and agentic task capabilities, and supports high-resolution images. It can be accessed via the Amazon Bedrock console, AWS CLI, AWS SDKs, or the Anthropic SDK.
Why does it matter to an everyday developer?
Claude Haiku 5.5 is designed for rapid, repeatable tasks that require fast response and low operational cost. Developers can use it for coding workflows (code review, cross-file updates), high-volume document classification, information extraction from documents, and traditional NLP tasks such as summarization and text generation. The new effort controls provide finer cost-performance management at the task level, optimizing both resource use and application performance. Haiku 5.5 also pairs with models like Claude Opus 5.5 for advanced orchestration: Opus handles planning and complex reasoning, while Haiku manages rapid execution and scale. This makes Haiku 5.5 especially useful for production workloads with predictable task patterns, cost constraints, or a need for parallel agentic activity.
What can the developer do now?
Developers can immediately start using Claude Haiku 5.5 within the Amazon Bedrock console (Playground), or programmatically through the AWS CLI, Bedrock SDK, or Anthropic SDK. Setting up requires an AWS account with Bedrock access, appropriate IAM permissions, and SDK installation. Developers should review current workflows to identify where subagent architecture or high-volume, predictable tasks can benefit from the cost and speed advantage of Haiku 5.5. For scenarios requiring more judgment or complex planning, they might also leverage Claude Opus 5.5 for orchestration. For hands-on examples, developers can review official AWS sample notebooks.
