Haiku 5.5 matches Luna’s low price, but long prompts cost more
Anthropic’s Haiku 5.5 brings its fast model down to $0.10 per million input tokens and $0.50 per million output tokens for prompts up to 100,000 tokens, giving smaller workloads a much cheaper option than Haiku 4.5. A less generous tokenizer uses about 1.25 times as many tokens for the same long prompt, and prices jump fivefold beyond 100,000 tokens. Simon Willison also tested SVG generation, where a low-effort request cost 0.0936 cents and took seven seconds.