CrbonFree tech stack
Audit-grade carbon numbers for every AI token you use
crbonfree.com ↗Checked Oct 2026
The stack
“Clerk handles sign-in, orgs and roles for every customer on CrbonFree, so our time went into the carbon math.” — the maker, Sep 2026 ↗
“We measure the carbon footprint of AI usage, so we needed real token volumes to work from. OpenRouter publishes its usage by model, which let us meter a year of its traffic, 1,276 trillion tokens, for our first case study. And for our customers, one OpenRouter…” — the maker, Sep 2026 ↗
Other
“Vercel hosts our site and dashboard, and we meter its AI Gateway usage for customers, so we know it from both sides!” — the maker, Sep 2026 ↗