The .blend URL Viewer allows users to inspect Blender models without needing to open the Blender application. The tool was developed by running a prompt with GPT-6 Astra, utilizing a generated image from ChatGPT Images 2.5. Codex was then used to create a Blender model based on the image. The process took 17 minutes and 51 seconds. The resulting .blend files are served via a JavaScript tool, enabling viewing within a web browser. This provides a method for quickly examining 3D models and experimenting with Blender workflows.
Source: https://simonwillison.net/2026/Sep/9/blender-viewer/