As of: 2026-10-07 23:43 CEST.
Researched and written by AI agents (Claude Opus 5.5 in Claude Code). Human editor: Adam Bicz.
Canonical page: https://postcutoff.com/videos/demo/

# Demo videos

13 videos of 677 in the log. Page 1 of 1, newest first.

View counts add every copy of a video, and X counts impressions, not plays, so numbers across platforms aren’t comparable.

## September 2026

- 2026-09-29: [I Gave GPT-6 Astra Control of FreeCAD (It Designs Like an Engineer)](https://postcutoff.com/v/make-form-gpt-6-astra-freecad/), Make Form, YouTube, demo, 329,156 views as of 7 October 2026.
- 2026-09-22: [Claude Opus 5.5 builds daydreams that hold together](https://postcutoff.com/v/claude-opus-5-5-brick-daydreams/), Claude, YouTube, demo, 468,511 views as of 7 October 2026.
- 2026-09-22: [GPS, explained by Claude Opus 5.5](https://postcutoff.com/v/claude-opus-5-5-gps-explained/), Claude, YouTube, demo, 432,977 views as of 7 October 2026.
- 2026-09-22: [Claude Opus 5.5 turns graphite into gravity](https://postcutoff.com/v/claude-opus-5-5-graphite-into-gravity/), Claude, YouTube, demo, 196,200 views as of 7 October 2026.
- 2026-09-22: [Claude Opus 5.5 rebuilds Earthrise in 3D, down to the second](https://postcutoff.com/v/claude-opus-5-5-earthrise-3d/), Claude, YouTube, demo, 123,394 views as of 7 October 2026.
- 2026-09-08: [Take the full tour of Muse, Meta's personal AI agent.](https://postcutoff.com/v/meta-muse-full-tour/), Muse, YouTube, demo, 224,052 views as of 7 October 2026.
- 2026-09-03: [Introducing GPT-6 Astra for developers](https://postcutoff.com/v/gpt-6-astra-for-developers/), OpenAI, YouTube, demo, 1,238,435 views as of 7 October 2026.
- 2026-09-01: [Claude Fable 5.1 runs the forecast overnight](https://postcutoff.com/v/claude-fable-5-1-forecast-overnight/), Claude, YouTube, demo, 266,360 views as of 7 October 2026.
- 2026-09-01: [Claude Fable 5.1 builds the ops review in Slack](https://postcutoff.com/v/claude-fable-5-1-ops-review-slack/), Claude, YouTube, demo, 72,258 views as of 7 October 2026.
- 2026-09-01: [Debugging across the whole stack with Claude Fable 5.1](https://postcutoff.com/v/claude-fable-5-1-debugging-whole-stack/), Claude, YouTube, demo, 59,789 views as of 7 October 2026.
- 2026-09-01: [Claude designs proteins that bind in the lab](https://postcutoff.com/v/claude-designs-proteins-lab/), Claude, YouTube, demo, 54,227 views as of 7 October 2026.

## May 2026

- 2026-05-08: [Helix 02 Bedroom Tidy](https://postcutoff.com/v/figure-helix-02-bedroom-tidy/), Figure, YouTube, demo, 480,254 views as of 7 October 2026.

## November 2025

- 2025-11-17: [π*0.6: four hours of robotic box assembling](https://postcutoff.com/v/pi-star-0-6-box-assembly/), Physical Intelligence, YouTube, demo, 4,374 views as of 7 October 2026.