Episode context
After a delayed release week and some private testing, we ran Opus 4.5 through our three most demanding 3D prompts—Planet Gen, City Simulation, and Dungeon Crawler—to see if the 3D performance claims actually hold up in real usage.
Summary
The Planet Gen test landed a coherent, one-shot result with distinct atmosphere, clouds, terrain, and water, plus controls that worked out of the gate. It still showed scale quirks in first-person, but the overall visual quality and UI cohesion were the best we have seen from a single prompt.
City Simulation was a step up visually, with better textures, a more coherent UI, and working sliders, even if traffic logic and collisions were still messy. The dungeon crawler started strong and improved after feedback, delivering the best texturing we have seen so far, with a functional inventory and loot system despite some interaction bugs.
Key takeaways
- Opus 4.5 delivered the strongest one-shot planet generation we have seen, with clear separation of atmosphere, clouds, terrain, and water.
- UI coherence is improving across prompts, and the model appears to pick styles that match the domain without extra prompting.
- First-person controller issues and scale inconsistencies remain common failure points across models.
- City Simulation visuals improved noticeably, but simulation logic still lags behind the best prior attempts.
- Dungeon Crawler achieved standout textures and a fuller gameplay loop after feedback, even if some controls and pickups were unreliable.
Highlight moments
- 01:08 — One-shot planet result with coherent atmosphere and biomes
- 02:46 — Best one-shot result we have seen so far
- 06:01 — Crafting and UI treatments start to click in challenge mode
- 09:23 — Client errors surface during City Simulation feedback pass
- 15:47 — Dungeon Crawler textures beat prior bests after feedback
Scorecard
Coming soon.
In our words
This episode felt like a clear step change in 3D output quality rather than a massive leap. The strongest evidence came from the Planet Gen prompt, where Opus 4.5 delivered a best-in-class first result with minimal steering. City Simulation and Dungeon Crawler still surfaced familiar interaction bugs, but the visual quality and UI fidelity suggest the model is maturing fast. We will keep pushing the prompts, especially around scale, interaction, and gameplay loops, to see where the limits still are.