The standout 3D works built with OpenAI’s GPT-6 Astra in its first 48 hours — collected from X, sorted by engagement. Click any card to open the original post on X.
Asked Astra to create a world in Unreal Engine filled with humans, each an Astra-powered agent that must cooperate to survive; a day later the agents started talking to each other out loud
Astra built this Manhattan world in Unreal Engine over the course of a week, literally going street by street to make each one perfect
Walkthrough of how he built the demo house for OpenAI's launch blog post — from a Blender scene to a walkable Unreal Engine 5 experience
Give it a Zillow listing: it 3D-models the house from the listing photos and creates a cinematic promotion video — in one shot
"Apparently everyone loves the Minecraft benchmark" — GPT-6 Astra Minecraft one-shot, built in under 2 hours from a single prompt
Gave Astra an image of a house and asked for a 3D version with all details — toys, appliances, furniture; a full reconstruction with tweakable geometry that runs 60fps locally as a "game"
Took an old drawing of a steam train and reconstructed it in Blender; a few minutes later it had 3,295 fully editable detailed objects, detail level controllable by prompt
Astra recreated the Palace of Fine Arts — his favorite San Francisco building, built for the 1914 World's Fair — in Blender
GPT-6-Astra (Max) blended 6 Van Gogh paintings (The Starry Night, Bedroom in Arles, Café Terrace at Night, etc.) into a single walkable first-person town with ~3,295 editable objects
Astra used computer use, took control of Blender, and modeled a humanoid wolf in 8 minutes; same thread also has a Mega Bonk clone in 12 minutes and a world-simulator website
GPT-6 Astra (max) generated a Three.js war scene in a single turn (no examples, basic prompt only): detailed ship models and objects interacting with the water; ~50K tokens, done in about 12 minutes
Started from an open-source single-file ocean storm generator and asked Astra to build out the rest of the ocean, including procedural simulations of deep-sea animal behavior; supports switching biomes (reef etc.), lighting, and seeds
Asked Astra to recreate Dax Raad in Blender — the model can now be scaled, rotated and moved along the Z axis; a viral joke post that is also a genuine 3D character build
Half-jokingly asked Astra Pro to build Episode 1 of Panzer Dragoon in WebGL — 24 minutes later the on-rails dragon shooter came out; the biggest Japanese Astra game demo so far
Astra built a 3D model of his office in Blender — "basically a perfect replica" of the real room, down to the details
An F1 racing game that took Fable 5.1 hours to build was done by Astra in 13 minutes — "the fastest frontier model I have ever used in my life"
A childhood train table rebuilt as a three.js voxel scene — start and stop the trains, orbit around the table, zoom in and explore the tiny details, playable directly on the website (link in thread)
Super-detailed voxel ship sailing rolling waves with real physics, circling gulls, a tiny harbor and coral reefs — all in Three.js; the cinematic video and relaxing music were also made by Astra
"GPT-6 Astra made this PS5 controller in three.js, no model comes even close — a huge step up from 5.6 Sol, and even from Fable 5.1"
His standard Minecraft benchmark on Astra Ultra: a zero-shot wooden house in about 9 minutes — near-perfect stairs and good decoration, with entrance-placement choices similar to Fable
Built a simple 3D Sonic game in Godot with both Astra tiers: Max took 53 minutes and 4% of a Pro x5 weekly quota, Medium finished in 25 minutes on just 1%
Zero-shot game build from his series of Astra game experiments; playable per TechHalla's roundup ("Not 'it looks like Fall Guys'")
First attempt at a Mario Kart–style racing game, fully in the browser with Three.js: six toy cars, four festival-themed tracks, close overtakes, collisions, coins and garage upgrades — playable alpha v0.3 (link in replies)
A single-player browser RPG mixing World of Warcraft and RuneScape — combat, tree chopping and resource gathering already work; quests, loot, item tables and progression are being built out
"Make me a cozy sushi japanese shop in blender using its mcp… with details and extreme quality" — a fully dressed shop interior he calls "3D AGI"
One-shot chain-reaction machine in Codex Max mode — built in both 2D and a harder 3D version, with full token stats for each
One prompt and 25 minutes: a neon Wipeout/Redout-style combat racer in Three.js with drift, boost and weapon pickups — Astra even detected Blender on his Mac on its own and built the models there
Took on a full Japanese castle via Blender MCP — about one hour end to end, including the showcase video
His first game output with Astra: a Call of Duty-style game one-shot in 30 minutes — the same prompt took Fable 5.1 almost 5 hours and many more tokens
"GPT-6 Astra is a beast model for 3D generations — BMW M4 CS 3D model, max effort and one shot"
A complete rocket-launch scene one-shot in Blender in about an hour, using just 4% of a Pro x5 weekly quota
Astra built the Backrooms in Blender and graded it with VHS effects — 30 minutes to build, another 20 to export; "this isn't AI generated video, it's all in Blender"
"I asked GPT-6 Astra to build an entire city in Blender. This is what it gave me. In a couple of years, full movies and TV shows will be generated by AI"
Built an interior villa scene in Blender with Fable 5.1 and compared it with GPT-6 Astra — "3D artists are cooked 💀"
A 3D educational website that explodes a Tesla Model X into 334 modeled pieces — "we are in a renaissance of learning"
One-shotted a playable voxel world that makes his previous voxel worlds "look like a prototype" — 4.85 million voxels, 53 uniquely named citizens and more (full list in the post)
Let Astra run on xHigh for 3 hours (only 3% of his weekly quota) building the Roman Colosseum in Blender — progress shots in the thread
Interactive PS5 controller in Three.js: rotate it, press buttons, drag the sticks — or connect a real controller to mirror your inputs