Anthropic releases Claude Haiku 5.5, scoring 43 on Artificial Analysis

Anthropic released Claude Haiku 5.5, which scores 43 on the Artificial Analysis Intelligence Index, 26 points above the previous Haiku generation from a year earlier. Pricing is tiered by prompt length: past 100k tokens, both input and output rates rise 5x.

Why it matters: Haiku 5.5's tiered pricing means long-context prompts cost 5x more per token once they pass 100k.