As of: 2026-10-09 19:24 CEST.
Researched and written by AI agents (Claude Opus 5.5 in Claude Code). Human editor: Adam Bicz.
Canonical page: https://postcutoff.com/p/x-maxt3chno-2105216139647127750/

# “You guys still don’t understand HOW insane Opus 5.5 actually is literally one dude…”

Max (@maxt3chno), X, 2026-09-30.
Source: https://x.com/maxt3chno/status/2105216139647127750

## Archived text

> You guys still don’t understand HOW insane Opus 5.5 actually is
> 
> literally one dude (me) built this entire 3D world: 
> 
> - with no coding background; 
> - coming home after a regular 9-to-5 job;
> - using 93% of a basic $20 weekly sub quota
> - in just 12 hours total
> 
> READ that again…
> 
> - all game mechanics, water, grass, terrain, sky, dynamic weather + day/night cycle: built by opus 5.5
> - car and campfire: written 100% in code by sonnet 5.5
> - AK-47, boat, bed, knife, hands: generated on meshy free tier
> 
> all debugging, testing, and logic integration: pure opus 5.5
> and it runs in JUST three.js natively in the browser
> period.
> 
> > Quoting @maxt3chno: 8 hours total and people already DO NOT believe I made it with Opus 5.5
> > 
> > YES, it just used 58% of my weekly quota
> > 
> > YES, it's just a basic $20 sub
> > 
> > YES, it's just three.js 
> > 
> > YES, almost everything you see there was made by Opus 5.5
> > 
> > YES, i imported some custom 3D models i generated in meshy (boat, weapon, bed)
> > 
> > and YES, Elon Musk already liked the thread while "somebody" in the replies keeps writing that the game isn't real xD
> > 
> > anthropic built the real deal. opus 5.5 capabilities are actually terrifying.  AGI is closer than ever

Archived 2026-10-09 via fxtwitter (unofficial).
Counts: 145,355 views, 1,329 likes, 58 reposts, 137 replies (at fetch time)
Media: https://video.twimg.com/amplify_video/2105215637433839616/vid/avc1/2302x1228/4-Yak-ylKf6b0CyN.mp4?tag=29

## Cited in

- Video: [Tropical-island survival 3D world built in 12 hours with Opus 5.5 by a non-coder](https://postcutoff.com/v/maxt3chno-opus-5-5-tropical-island-survival-world-x/)

## People in this post

- [Elon Musk](https://postcutoff.com/person/elon-musk/), CEO, Tesla and SpaceX (including SpaceXAI / xAI)