GPT 5.4 is so cracked
As frontier LLMs rapidly advance into complex multi-file coding and 3D environment generation, filmmakers gain powerful tools for rapid pre-visualization and custom interactive pipeline building.
What this lesson covers
This video reviews OpenAI's GPT-5.4 model, highlighting its advanced coding capabilities, 3D world building, and music composition. It demonstrates complex prompt handling using OpenAI's Codex and the native ChatGPT interface.
Key takeaways from the creator
AI-extracted notes, not independently verified product claims. Timestamp links let you check each point in the original video.
- 0:42 ↗
OpenAI's Codex operates as a coding agent that can create and edit multiple files within a local project folder simultaneously.
- 1:06 ↗
GPT-5.4 can interpret advanced multi-step prompts to build interactive 3D digital twins and web-based visual environments.
- 3:32 ↗
The model is capable of composing complex, multi-bar classical piano music via generated web interfaces.
- 7:42 ↗
Extended thinking modes inside ChatGPT allow for more precise execution of complex geometric and ray-traced visual tasks.
Workflow outlined in the video
- Explore OpenAI Codex for managing multi-file web applications or custom tool development.
- Utilize high reasoning effort settings in GPT-5.4 when tackling complex prompt logic or spatial layouts.
- Test native canvas modes in ChatGPT for side-by-side code review and immediate visual iteration.
Before you use this workflow
These notes describe the source video at its publication date. Model access, pricing, connectors and interfaces may have changed. Check the original source and the provider’s current documentation before installing an add-on, connecting an account or spending credits.
ReelStack has not independently tested this workflow. Preview one representative shot and check motion, continuity and output quality before applying it to a full production. No result, cost saving or model capability is guaranteed.
Explore the tools
How to interpret the numbers
250,520 views captured 23 October 2026. ReelStack recommendation score: 49/100. Formula: radar-v5. This is ReelStack’s calculation, not a YouTube rating or a measure of factual accuracy.
Show the calculation
- 45% performance: 2.35× views vs 12 other channel videos observed at a similar age. View-evidence factor 100% (views / (views + 1,000))
- 25% freshness: 0/100 with a 14-day half-life
- 20% momentum: 4 views/day vs 5 channel baseline (7 comparable uploads), with the same view-evidence factor
- 10% engagement: 88/100; likes + 4× comments, smoothed with a 500-view neutral prior