Changelog

Every change to the prices and benchmarks on this site, newest first.

• 2026-10-09

  Added “Why Haiku 5.5 can cost 12× more”, About & methodology, and Terms pages.

• 2026-10-09

  Accuracy pass: Luna rates re-checked against OpenAI’s model and pricing pages; Artificial Analysis figures taken from AA directly (output tokens 435M vs 144M, so the calculator’s measured-verbosity multiplier is now 3.02×, was 3.24×); FrontierCode labelled as version 1.1 from Anthropic’s launch comparison.

• 2026-10-09

  Launch. Prices for Claude Haiku 5.5 and GPT-6 Luna verified against the Anthropic pricing page, the Haiku 5.5 model page and the OpenAI API changelog, including both long-prompt tiers and Luna’s cache rates.