Claude Haiku 5.5 is available today across Kiro IDE, CLI, Web, and Crew. It is the fastest model in the Claude 5.5 family, aimed at work that runs in large volumes and needs a quick response, and it is a clear step up from Claude Haiku 4.5. With Haiku 5.5, all three Claude 5.5 models are now in Kiro. Opus 5.5 is there for your hardest problems and Sonnet 5.5 for everyday coding, while Haiku 5.5 steps in wherever volume or speed is what matters most.
This article has been indexed from Kiro Blog