The AI Footprint ← All 134 models

How much energy does Qwen3.5-9B use?

Alibaba · released 2026-02-24

Complex prompt
0.303 Wh
under 1 m of driving
Everyday chat
0.013 Wh
Capability
79.0
Energy rank
22 of 134

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
Nothing we track is both at least as capable as Qwen3.5-9B and meaningfully lighter. On our figures this is already a sensible choice for its standard of work.

What Alibaba publishes

Energy cannot be worked out without knowing how big a model is. Of the 33 models from Alibaba that we track, 21 can be assessed at all — the rest publish too little for anyone outside the company to calculate anything.

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Figure calculated 2026-09-01 · how these numbers are made · the full comparison of 134 models