The search was "ai tokens per tonne co2" and the "1000 tokens emits 8.3g CO2" bit was my paraphrasing from the AI overview.

This article [0] mentions "8.3g CO2" but it's linked source [1] uses a different number - 4.32g. Perhaps revised after publication.

I ran the search again and got different numbers... I'm sure the real numbers will be changing quite a bit over time too.

[0] https://ditchcarbon.com/blog/llm-carbon-emissions

[1] https://smartly.ai/blog/the-carbon-footprint-of-chatgpt-how-...

Oh, I thought you meant "Google, the company, published this number" (which I would have been very interested to read), not "Google, the search engine/sketchy llm, returned this result".

Fair enough.