Built with GPT-6 Astra
Everything Astra built for The Recording Club in 34 days.
By the numbers
- 2,626Astra sessions
- 1,187files patched on the 3D model
- 2,674images generated
- 9builds
- 34days
Counted from Codex session records, Sep 4 to Oct 7, 2026. File counts include the GPT subagents Astra sessions direct.
Every build in the film
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The first request
Sep 4, 9:32 pm: Greg asks Astra, in a Codex terminal, to build a 3D model of the club.
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The whole studio in 3D
A walkable model of 19 spaces, built from photos and video, with a measure tool.
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Rehearsal Room 2
Renders, a true-size furniture planner, a 3D view, a priced budget and an install guide.
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Music
Mini Producer Studio, Franklin's Tower rebuilt for the dance floor, and Shakedown Street as house.
- daylight-club-listening.pages.dev listen
- shakedown.gregspero.com A/B player
- Mini Producer Studio desktop app, not public
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The system around it
GPT Grid on the phone, the Imagery agent, the Control Room redesign and the Judge room.
- GPT Grid phone walkie private, auth-gated
- Imagery agent private, auth-gated
- TRC Control Room runs locally, shown on sample data
- Judge room runs locally
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By the numbers
2,626 sessions, 1,187 files, 2,674 images, 9 builds, 34 days.
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Room for Revision
The documentary proposal Astra wrote about this project.
Who built what
What Astra did, and what Claude did
GPT-6 Astra, through Codex
- The whole-studio 3D model and its measure tool.
- Its own Rehearsal Room 2 design: renders, planner, 3D, budget, install guide.
- Mini Producer Studio, the Franklin's Tower rebuild and its films.
- The Shakedown Street house rework and its A/B page.
- The Control Room admin redesign and the Room for Revision proposal.
- Judge room reviews of Claude's nightly rule proposals.
Claude
- A competing Rehearsal Room plan, which a review picked for the physical build.
- The handoff pack Astra started from, and the original Mini Producer.
- The image briefs. The pixels come from OpenAI's image tool run in Astra sessions.
- This film and this page.
The 3D walkthrough and measure shots use the v27 whole-studio preview build. The live site runs the default view. Sources: Codex session records and Greg's prompt history.