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How much energy does Llama 3-70B use?

Meta AI · released 2024-04-18

Llama 3-70B uses about 0.079 Wh of electricity to answer a typical question. A long, complex answer costs about 23× more, at 1.84 Wh. That places it 148 of 277 among the models we can measure, and every figure here is calculated the same way as every other model.

A typical question
0.079 Wh
under 0.1 g CO₂·under a metre of driving
A long, complex answer
1.84 Wh
0.84 g CO₂·≈ 3 metres (11 feet) of driving
Capability
122.9
Energy rank
148 of 277
Human votes
1221

How capable is it, really?

The capability figure of 122.94 is a composite over 58 benchmarks, Epoch AI's Capabilities Index, which folds in software engineering, agentic tool use, long-context comprehension and creative writing as well as science reasoning. It is one number standing for a lot of separate tests, so treat a small gap between two models as noise rather than a ranking.

156,876 people have voted on it in blind head-to-head comparisons on LMArena, giving it a rating of 1221. This is the only figure here that measures whether anyone actually prefers the answers, rather than how the model scores on a test. Broken down, people rate it 1206 on coding, 1210 on creative writing, 1194 on following instructions.

What this figure is

Calculated  Calculated from a published parameter count. Every model on this site is calculated the same way, so the comparison holds even where the absolute value carries uncertainty. Our figures are good to roughly a factor of two to three, which is why we only ever state a difference of 5× or more.

Is there a better choice?

A lighter model that does the job
xAI · capability 154.4. It scores higher than Llama 3-70B on Epoch's Capabilities Index (154.37 against 122.94), the composite over 58 benchmarks that the capability figure above comes from, and uses about 6.4× less energy per answer: 0.285 Wh against 1.84 Wh. It has not faced human head-to-head voting, where Llama 3-70B carries 156,876 votes, worth weighing. See them side by side →

What Meta AI publishes

Energy cannot be worked out without knowing how big a model is. Of the 24 models from Meta AI that we track, 12 can be assessed at all, the rest publish too little for anyone outside the company to calculate anything.

Where these figures come from

Capability and the roster come from Epoch AI, whose Capabilities Index is the 58-benchmark composite quoted above. Energy is calculated with EcoLogits and calibrated against laboratory measurements from ML.ENERGY. Human preference comes from LMArena. All four are public and free; the full method is here.

These figures are published under CC BY 4.0, use them anywhere, including commercially, with credit to The AI Footprint.

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Or work out what a year of using it adds up to, for you or for a whole organisation.

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Figure calculated 2026-10-17 · how these numbers are made · the full comparison of 277 models