Claude Haiku 5.5 Is Live — 75% Cheaper & Built for AI Agents

Anthropic just launched Claude Haiku 5.5, its newest small Claude model built for speed, scale, and lower-cost AI workloads. Anthropic says Haiku 5.5 costs around 75% less to run on average than Haiku 4.5, while delivering major improvements across coding, computer use, and knowledge work. It’s designed for high-volume tasks like summaries, classification, database queries, browser use, and live customer support. Try TestMu AI Agent Assurance: https://www.testmuai.com/agent-assurance/ One of the most interesting use cases is AI agents. Haiku 5.5 can work as a lightweight subagent alongside Claude Opus 5.5 or Sonnet 5.5, letting the larger model handle complex reasoning while Haiku takes care of faster, repetitive work. It’s also the first Haiku model with an adjustable effort setting, so developers can choose between more intelligence or lower cost and latency. As multi-agent workflows become easier and cheaper to build, TestMu AI Agent Assurance helps teams independently verify what those agents actually do across tools, APIs, databases, files, and real workflows. Would you use Haiku 5.5 as a subagent alongside Opus or Sonnet? Tell us in the comments. #ClaudeHaiku55 #ClaudeAI #Anthropic #AI #AIAgents #AgenticAI #ClaudeCode #LLM #GenerativeAI #TestMuAI