CENTRAIL

The system of record for AI work.

Know what AI did, what it cost, and whether it was worth it.

Works with
OpenAIAnthropicClaude CodeGitHub CopilotCodexChatGPTClaudeGeminiGitHub Actions
Trails

We find you AI savings.

Connect once, scope a trail, and it becomes a living card. Know why a bill spiked, get warned before the next one, and see the cheaper model that does the same job.

You spent $4,120 on AI work that never shipped.

The numbers above are an example scenario.

Live demo

Demonstration beats claims.

This is the dashboard, loaded with our own real numbers. Click around. No signup required.

centrail.org/greenai
Tokens · all time
1.9B
Est. spend
$2,706
Commits
623
CO₂
227.3 kg
Model mix
Fable 542%
Opus 4.839%
Opus 58%
Opus 4.76%
Other5%
By project
centrail1.3B$2,061
uptime-stack229M$240
AWARE203M$235
other136M$170
592.5 kWh · 1,878.9 L water · $4.34 per commit
Real numbers from building Centrail. The live dashboard is one command away.
GreenAI · Free

Every token has a footprint.

Every prompt draws real electricity and real water somewhere, and today that footprint is deliberately hard to see. GreenAI puts it next to the invoice: the energy, water, and CO₂ behind every token your AI burns. Every figure is cited and the methodology is public.

Track yours, join the pledge, and make the picture sharper for everyone. Free.

CLI-verified: one command reads your usage at the source, so every number here is measured, not guessed.

Proof, not promises

Real numbers. Honest pricing.

No invented logos, no fake testimonials. Live aggregate totals from every Centrail account, a cited quote, and a public methodology.

hover or tap a number for what it equals

Every account makes the picture sharper. Join the pledge and add your numbers, free.

“Arguably the most important change will come from speeding up the transition to clean energy, and boosting the amount available so that demand for greener AI does not gobble up the low-carbon electricity also needed to decarbonise other sectors, from transportation to construction.”
The Economist, “The tricky task of calculating AI’s energy use” (2025)
Free
$0
GreenAI included
Personal Pro
$6/mo
With Trails
Team Standard
$49/mo
5 seats included
Team Pro
$99/mo
5 seats included, adds Trails

Start free and keep what matters. Paid tiers add Trails. No card is required to begin.