Help software vendors (ISVs) quantify the carbon impact of their LLM calls — pure REST API, zero SDK, automated CSRD-ready reports.
# Existing LLM call — unchanged
response = mistral.chat(messages=messages)
# Two lines added — prompts never leave your infrastructure
requests.post('https://carbon-llm.com/api/v1/track',
headers={'Authorization': 'Bearer isv_live_xxxx'},
json={'tenant_id': 'client-xyz', 'model': 'mistral-large-2',
'prompt_tokens': response.usage.prompt_tokens,
'completion_tokens': response.usage.completion_tokens})
# → { "co2_grams": 2.85, "confidence": "measured" }A simple, transparent API to meet CSRD expectations
Your prompts never pass through our servers. Only metadata is sent.
Mistral LCA 2025 and Google Cloud 2025 data. Full traceability.
PDF reports aligned with ESRS E1 and GHG Protocol Scope 3.
Edge API on Cloudflare Workers. No impact on your performance.
Three steps to start measuring your AI carbon footprint
Sign up in 30 seconds. Get your test and live API keys immediately.
Keep using OpenAI, Mistral, Anthropic, etc. as you normally would.
Two lines of code to track tokens and CO₂. Prompts never leave your stack.
Standard REST API — works with any language
# Existing LLM call — unchanged
response = mistral.chat(messages=messages)
# Two lines added — prompts never leave your infrastructure
requests.post('https://carbon-llm.com/api/v1/track',
headers={'Authorization': 'Bearer isv_live_xxxx'},
json={'tenant_id': 'client-xyz', 'model': 'mistral-large-2',
'prompt_tokens': response.usage.prompt_tokens,
'completion_tokens': response.usage.completion_tokens})
# → { "co2_grams": 2.85, "confidence": "measured" }Measured and estimated data — transparent sources
| Model | gCO2e / 1k tokens | Confidence | Source |
|---|---|---|---|
| gpt-4o | 0.3 | Estimated | Gravity Climate — méthodo. IA (Grove), ~classe GPT-4 |
| gpt-4o-mini | 0.1 | Estimated | Gravity Climate 2025 |
| gpt-4-turbo | 0.35 | Estimated | Gravity Climate 2025 |
| gpt-3.5-turbo | 0.08 | Estimated | Gravity Climate 2025 |
| claude-3-5-sonnet | 0.3 | Estimated | Gravity — alignement classe GPT-4 (estimé) |
| claude-3-opus | 0.45 | Estimated | Gravity Climate 2025 |
| claude-3-haiku | 0.1 | Estimated | Gravity Climate 2025 |
| mistral-large-2 | 2.85 | Measured | Mistral LCA 2025 (1,14 gCO₂e / 400 tokens inférence ; Carbone 4 / ADEME) |
See the full methodology for details on sources and calculation.
No subscription tiers. 100,000 free events to get started.
| Service | Description | Price |
|---|---|---|
| Tracking event | 1 tracked LLM call | 0.001 EUR |
| CSRD PDF report | Monthly report per client | 0.50 EUR |
| Client dashboard | Dashboard access per active client | 9 EUR / month |
Add a brevity suffix to prompts to reduce completion tokens — and your carbon footprint.
Create a free account and start tracking in under 30 minutes.