Key Info

Anthropic's Claude Haiku 5.5 is now live on OpenRouter, marking the first Haiku model to support configurable reasoning efforts while cutting costs by about 75% versus its predecessor.

Highlights

  • First Haiku-family model with reasoning effort support
  • Approximately 75% cheaper than the previous generation
  • OpenRouter measured throughput of 100+ tokens per second
  • Benchmarks show a clear capability boost over the prior Haiku
  • Immediately available to use on the platform