From the source
Anthropic released Claude Haiku 5.5, its cheapest and most capable small model, with an adjustable effort setting for the first time in the Haiku line.
The model is designed for high-volume, cost-sensitive work such as summaries, database queries, classification, customer support and browser use, and can serve as a subagent alongside Sonnet 5.5 or Opus 5.5.
Anthropic says average running costs are around 75% below Haiku 4.5, factoring in the tiers and an updated tokenizer.
