Llama 3.1 8B: cost, energy and CO₂ per token
What is the footprint of Llama 3.1 8B? Llama 3.1 8B emits about 49 g of CO₂e, uses 794 mL of water and 127 Wh of electricity per million generated tokens. Per million input tokens: 7 g of CO₂e, 113 mL of water, 18 Wh. Public price: €0.07 per million generated tokens, €0.04 for input.
Factors tokenclimate-v4-2026-08, updated on , medium confidence. Sources and equations in the methodology.
Key figures, per million tokens
| Energy | CO₂e | Water | Price | |
|---|---|---|---|---|
| Input tokens | 18 Wh | 7 g | 113 mL | €0.04 |
| Generated tokens | 127 Wh | 49 g | 794 mL | €0.07 |
Of the 20 models in the TokenClimate registry, Llama 3.1 8B ranks 2nd for carbon intensity per million generated tokens, below the median (723 g). The gap with Mistral Small, the registry's most frugal, is still ×2.2.
Frequently asked questions
How much CO₂e for 1 million tokens with Llama 3.1 8B?
About 49 g per million generated tokens and 7 g per million input tokens (factors tokenclimate-v4-2026-08 of the TokenClimate registry).
Where do these figures come from?
Factors published in TokenClimate's versioned registry, each with its citation on this page. The full equations and parameters are in the public methodology, at tokenclimate.com/en/methodology.
What is the confidence level?
Medium confidence: interpolation within the model family.
How can you measure your organisation's real usage?
The AI usage report computes twelve months of cost and CO₂e from your organisation's Anthropic admin key (the key is never stored), ready in about fifteen minutes: tokenclimate.com/bilan/en. Locally, the open source plugin claude-carbon measures a Claude Code session.
Sources and method
Energy per token
The per-token energy factor behind the figures above, published with its citation. (Jegham et al., arXiv:2505.09598 (v6))
Infrastructure parameters
Datacenter parameters applied to this provider (the equations live in the methodology). (Jegham et al., arXiv:2505.09598 (v6))
| PUE | 1.2 |
| Grid carbon intensity (CIF) | 0.287 kgCO₂e/kWh |
| On-site water (WUE) | 0.12 L/kWh |
| Off-site water (EWIF) | 5.11 L/kWh |
| Amortised manufacturing (embodied) | 44 gCO₂e/kWh |
Price
Public provider prices. (groq.com/pricing)
Full equations and assumptions in the methodology.
Are you a developer? Measure your real Claude Code usage
curl -fsSL "https://tokenclimate.com/install.sh?ref=models" | bashThe command installs the team CLI (you need your organisation's invitation code). Solo, the open source local version claude-carbon installs with npx claude-carbon, no account needed. Or estimate a volume first with the calculator.