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
Two trains built entirely at runtime from TypeScript/Three.js code — dimensions, profiles and geometry functions instead of 3D model files; wheel motion and the explode/reassemble animation are fully code-driven and run smoothly in the browser
Astra recreated the Palace of Fine Arts — his favorite San Francisco building, built for the 1914 World's Fair — in Blender
His in-engine Unreal Engine demo clip went viral on the strength of the footage — 1.7K likes within hours
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
Asked Astra for a hyper-realistic GTA 6-style Singapore street in Three.js, rendered from an iPhone POV — a playable demo is coming
A working in-game screen showing the OpenAI logo morphing into "6 Astra" — built entirely inside Minecraft
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
Follow-up to the exploding Tesla: a 3D learning website that dissects the male anatomy into 2,234 modeled pieces — "we are in a renaissance of learning"
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
West Lake, Leifeng Pagoda, Qianjiang New Town, the Olympic "Big Lotus" stadium and more in one interactive miniature Hangzhou — orbit, zoom, fly to landmarks and switch day/sunset/night; built in about 24 minutes
A smoothly interactive Three.js build posted with the complete prompt — "might not even need Blender, the stuff you can build on the web now is wild"; it cut his workflow from hours down to 30 minutes
Asked Astra to turn the 1977 text adventure Zork into a full 3D action-adventure — it kept the original plot and puzzles, added fight scenes, and built every character and environment in Three.js
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"
Character modeling in Blender from scratch — no Meshy or Tripo, no manual intervention at all; "an area Fable 5.1 and GPT-5.6 Sol couldn't touch, and the quality jump took just two months"
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)
Full pipeline in one go: modeling in Blender, importing into Three.js, then generating the site's animations and interactions and deploying online — "the cost of making sites like this is now absurdly low"
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
Had Astra operate Blender to model Sarah from Virtua Fighter 1 — the model even comes with an armature rigged inside
"Finally got to play with GPT-6 Astra — first the simple version: Blender modeling + three.js + your creativity; better materials coming in the next version"
His months-long frontend benchmark — rebuild a Three.js globe dashboard from one prompt and one reference image — was finally nailed in one shot: Astra even caught the day/night toggle and 2D/3D view switch that appeared only in the screenshot
Gave Astra a few photos of his Australian dorm room; about 20 minutes later he had an interactive 3D scene built with three.js and Blender, plus a demo video
Built a walkable 3D space with Blender MCP — every furniture piece can be pulled out and rotated, you can walk around inside the room, and the editable Blender data remains; a Midjourney→Blender pipeline is next
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
Fed Astra a raw, incomplete mesh straight from his 3D scanner — it modeled it completely in Blender and exported an actual STEP CAD file, verified opening in SolidWorks on screen recording
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"
"Astra's 3D modeling is scary — it clearly surpasses Fable 5.1. Games this precise were impossible before, and the prompt was just a casual one-liner"
A Mac app simulation of his first computer from 40+ years ago, built with Astra + Blender: clickable rubber keyboard, working Sinclair BASIC, cassette loading with real tones, CRT scanlines, and a bundled playable game (Gridrunner)
One prompt pointing Astra at his ongoing mecha project produced a Pacific Rim–style battle game; parts of the Three.js work ran through his own harness
"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"
Feeding his own concept art to Astra and getting 3D models back in Blender — "a great time for visionaries who want to turn their ideas into worlds"
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"
An interactive sci-fi industrial atrium recorded straight from the page — control the character to walk, run and turn; Blender modeling + Three.js interaction with licensed base models and motion assets, then polish on gear, materials, lighting and motion blending
The same 3D mummy generated by GPT 5.6 Sol (left) and GPT 6 Astra (right) via Pixal3D on ComfyUI + headless Blender — a clean A/B quality comparison
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)
Slow mode took just 10 minutes to render a highly detailed donut in Blender — "the tutorial I always started with and never finished, which takes an hour or two of video to teach"
In 2 hours Astra modeled a full Mercedes AMG G63 in Blender for Roblox, made its own PBR textures, and even drafted reference designs and review plans for itself along the way
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