[bgirard]

> Using the develop web game skill and preselected, generic follow-up prompts like "fix the bug" or "improve the game", GPT‑5.3-Codex iterated on the games autonomously over millions of tokens.

I wish they would share the full conversation, token counts and more. I'd like to have a better sense of how they normalize these comparisons across version. Is this a 3-prompt 10m token game? a 30-prompt 100m token game? Are both models using similar prompts/token counts?

I vibe coded a small factorio web clone [1] that got pretty far using the models from last summer. I'd love to compare against this.

[1] https://factory-gpt.vercel.app/

[veb]

I just wanted to say that's a pretty cool demo! I hadn't realised people were using it for things like this.

[bgirard]

Thank you. There's a demo save to get the full feel of it quickly. There's also a 2D-ASCII and 3D render you can hotswap between. The 3D models are generated with Meshy. The entire game is 'AI slop'. I intentionally did no code reviews to see where that would get me. Some prompts were very specific but other prompts were just 'add a research of your choice'.

This was built using old versions of Codex, Gemini and Claude. I'll probably work on it more soon to try the latest models.

[gspetr]

Any estiimates on how much it cost you? In terms of total real world time, money, and time spent by the agents.

[bgirard]

About ~$300: $200 for Claude max subscription $20 for Vercel $20 for Codex $20 for Meshy

I think these days the $200 Max subscription wouldn't be needed. I bet with these latest models you can make due with mixing two $20/mo subscriptions.

Real time was 2 weeks of watching the agents while watching TV and playing games, waiting for limit resets, etc... Very little decided focused time.