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Anthropic released Claude Haiku 5.5 on 7 October 2026 at $0.10 per million input tokens and $0.50 output, for prompts under 100,000 tokens. Above that threshold the price is five times higher and the cut is 50%, not 90%. Anthropic's own estimate of real workload savings is about 75%. The model jumps from 15.7% to 72.4% on OSWorld 2.1 and from 0.0% to 39.2% on Terminal-Bench 4.0, though that second figure is at maximum effort rather than the default.
Oct 8, 2026
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7 min read