Morning Edition · Sunday, October 18, 2026Published at 2:13 AM EDT · New York

Anthropic Prices Claude Haiku 5.5 at a Tenth of Haiku 4.5 as Small-Model Rates Fall Toward DeepSeek's

Haiku 5.5 costs $0.10 per million input tokens and $0.50 per million output for prompts up to 100,000 tokens, and third-party figures put it at 64.8% on SWE-Bench Pro against 81.3% for Sonnet 5.5.

Anthropic released Claude Haiku 5.5 on October 7 and describes it as its fastest and cheapest small model, built for high-volume, cost-sensitive work. The model costs $0.10 per million input tokens and $0.50 per million output for prompts u…