Anecdote◆Article
GPT-5.6 Sol operating in xhigh mode autonomously designed the custom Codex pet, using multiple rounds of gpt-image-2 to generate the sprite assets.
Simon Willison describes asking Codex Desktop for a custom pelican-on-a-bicycle pet and having GPT-5.6 Sol xhigh handle the entire creation process, iteratively calling gpt-image-2 to produce the needed sprite images. ✦ AI generated
Simon Willison · Simon Willison's Weblog · 2026-07-14 · original ↗
The most interesting thing about this process was watching how the custom pet was created. I told it I wanted a custom pet that was a pelican riding a bicycle and GPT-5.6 Sol xhigh did the rest of the work, using several rounds with gpt-image-2 to generate the necessary sprite assets.
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- ·Requested custom pet: a pelican riding a bicycle
- ·GPT-5.6 Sol in xhigh mode did all the work
- ·Model, not user, drove entire creation process
- ·Used several rounds of gpt-image-2 calls
- ·Each round generated needed sprite assets
- ·Simon Willison called this the most interesting part
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