This post shows an SVG Xbox controller which is quite well-drawn, supposedly created by a "mystery model." Based on the OP's comments in the replies, it is very likely GPT-4.5:

https://x.com/NotBrain4brain/status/1894285365969584303

Whenever I have access to GPT-4.5, I will ask it "Write SVG code that draws an Xbox controller." (I may also ask a volunteer who has the relevant OpenAI subscription to do this.)

I will render the SVG at https://www.svgviewer.dev/, making any slight modifications needed to get it to run.

If the result looks reasonably close in quality to the "mystery model" image above, I will resolve YES. If it's unclear, I may run the experiment multiple times and choose the best option, since the image above was probably somewhat cherry-picked. If I'm still not sure, I will consider putting it to a poll. Essentially, I aim for the market to resolve YES if it's reasonable to believe that GPT-4.5 generated the top SVG image above.

• Update 2025-03-05 (PST) (AI summary of creator comment): After a few days:

  • If no generated SVG output is produced that is of comparable quality to the mystery model's image within a few days of experimentation, the market will be resolved NO.

  • This update sets a clear timeframe for concluding the experiment in favor of a NO resolution.

• Update 2025-03-06 (PST) (AI summary of creator comment): Prompt Engineering Exclusion:

  • Only outputs generated using the original, one-line prompt (without additional prompt engineering) will be considered for a YES resolution.

  • Even if prompt engineering produces an SVG closer in quality to the reference, those results will be disregarded.