Claude Haiku 5.5 is live on OpenRouter with reasoning support

Anthropic's Claude Haiku 5.5 is now accessible on OpenRouter, marking the first model in the Haiku series to support reasoning efforts. The model is available via the OpenRouter Claude Haiku 5.5 model page.

OpenRouter stated that the model costs approximately 75% less to run than its predecessor, demonstrated capability gains across benchmarks, and clocked an inference speed exceeding 100 tokens per second in its measurements.