Kiro: Claude Haiku 5.5 Now Available

October 23, 2026 Claude Haiku 5.5 Now Available Claude Haiku 5.5 is now available with experimental support across the Kiro IDE, CLI, Crew, and Web for Pro, Pro+, Pro Max, and Power customers in us-east-1 (IAD) and eu-central-1 (FRA). Haiku 5.5 is designed for high-volume work requiring quick responses. It has a 1M-token context window . Requests up to 100K tokens have a 0.06x credit multiplier ; requests that exceed 100K tokens are billed at 0.3x . To load the latest model list, restart the IDE or CLI, run kirocrew restart for Crew, or refresh Web in your browser. Learn more -> { PREVIOUS } Claude Opus 4.5 support for AWS IAM Identity Center users { NEXT } Claude Fable 5.1 Preview Begins Rolling Out to Kiro Enterprise