How much energy and carbon does your AI use? Measure it, per token.

CrbonFree meters every call, per model and per provider, with published factors and an uncertainty band you can defend.

• One number, every surface

  A token counted anywhere lands in the same report.

• Numbers that hold up to questions

  Every factor, layer and uncertainty band is published with a version number.

• Usage metadata only, never your prompts

  Prompt and completion content never reaches us.