alt.hn

2/14/2026 at 8:05:47 AM

Show HN: Prompt to Planet, generate procedural 3D planets from text

https://prompttoplanet.n4ze3m.com/

by error404x

2/14/2026 at 12:40:37 PM

What's going on, the focus gets sucked away from the edit box after every keystroke?

by stevage

2/14/2026 at 1:31:51 PM

will fix it :)

by error404x

2/14/2026 at 11:59:56 AM

tried this:

   Generate Earth-like planet (10,000km diameter, 24h rotation, 23° axial tilt).
   Single supercontinent spanning 40% of surface area, centered on equator.
   Remaining 60% is ocean.

   Continent features:
     - Central desert plateau at 1,500m elevation, approximately 2,000km × 1,500km
     - Mountain range along entire eastern continental margin, peaks 4,000-6,000m
     - Gradual elevation decrease toward western coast

Looks like it understood only „earth-like“ and 23° axial tilt, the map is fractal.

by ivan_gammel

2/14/2026 at 1:31:20 PM

Thanks for trying it out. I think I need to change the model that generates the preset. It’s currently using gpt-5-mini.

by error404x

2/14/2026 at 12:43:12 PM

I have tried a few things. Honestly this feels like some sort of very lazy vibe-coded app that superficially looks cool but does not actually produce anything of any value.

by stevage

2/14/2026 at 1:33:15 PM

Yep, it’s just a vibecoded project, and the model used for the preset isn’t great since I’m using gpt-5-mini. I’ll change the model. It’s just a fun weekend project only

by error404x

2/14/2026 at 6:28:13 PM

Thanks guys for the feedback. I’ve changed the preset generation model from GPT-5 Mini to GLM-5. The quality has improved a little, but the model is slightly slower

by error404x

2/14/2026 at 11:20:29 AM

Super cool idea, but I don't seem to be able to type in the text box. Tried Chrome and Firefox, same issue. Something taking focus from the text box as soon as I input anything?

by cryptoz

2/14/2026 at 1:33:44 PM

I’ll fix it. Sorry about the issue.

by error404x

2/14/2026 at 5:48:33 PM

As others have noted, the output doesn't seem to be anywhere close to what's being prompted.

by huhtenberg

2/14/2026 at 6:29:35 PM

model I used for preset generation was gpt-5-mini. I’ve changed it to another model. Hopefully, it will follow the instructions better.

by error404x

2/14/2026 at 1:06:15 PM

Not working for me.

by stogot