19:50 Put codex and claude (thinking high) to work in parallel to see who could come up with the better physically accurate mindless tapping orbital mechanics sandbox.
20:10 Both codex and claude finish pretty much at the same time, but my kids say claude's version is more fun.
20:50 Claude runs out of its 5h session limit while finetuning some things, while Codex has 80% left (!).