How to Edit a Screen Demo with ChatGPT Codex
Record the demo in ScreenKite, open the project with ChatGPT Codex, and ask for a transcript cut. ChatGPT Codex returns the cut list first. The ScreenKite AI fee is $0. Free to start. Pro is one payment of $79.99.
Short answer: record the demo in ScreenKite, point ChatGPT Codex at the project folder, and ask for a transcript cut with the list first. ChatGPT Codex names the cuts. They land when the agent applies them. The ScreenKite AI fee is $0.
By Mike Chong, Founder of ScreenKite. Last updated: October 27, 2026.
ScreenKite is free to use. Every editing feature is free. One payment of $79.99 removes the export watermark, covers 3 devices and never renews. Founder price until 2026-10-31, then $99.99. ChatGPT Codex bills to the plan you already pay for. Try ScreenKite
What do you need?
- A Mac on macOS 15 or later, Apple Silicon or Intel.
- ScreenKite, signed in with your account.
- ChatGPT Codex from OpenAI's Codex documentation.
- A screen demo with a voice track.
How do you edit a demo with ChatGPT Codex?
- Record the take in ScreenKite, or open an existing project. The project lives in a folder on your disk.
- Turn on transcription in ScreenKite so the agent can cut from the words.
- Open ChatGPT Codex in that project folder.
- Ask for a plan, not an immediate apply. A prompt that works:
Open this ScreenKite project. Cut false starts, filler words and dead air. Show me the cut list first. Do not change the timeline until I say yes.
- Read the list. Each line should name a range and a reason.
- Reply yes when the list looks right. ChatGPT Codex applies the cuts. Each cut is an ordinary ScreenKite edit, so undo works on any one of them.
- Scrub the timeline and export a local MP4. Exports are lightning fast, in our tests and in user feedback.
Claude Code, Antigravity, Grok Build and Kimi use the same editor. The steps stay the same. Swap the agent.
How does ScreenKite with ChatGPT Codex compare with Descript?
| Need | Descript | ScreenKite with ChatGPT Codex |
|---|---|---|
| Who pays for the AI | A pool of AI credits on your Descript plan, used by Underlord, Studio Sound and more (Descript help) | Your OpenAI plan. No ScreenKite AI fee |
| Recording time | "Media minutes draw down whenever you upload or record media in Descript." Unused minutes "don't roll over monthly" (Descript help) | Unlimited recording, on the free tier too |
| Which AI edits | Descript's own AI features, such as Underlord | ChatGPT Codex, the agent you already use |
What does the agent change?
- False starts and repeated takes.
- Filler words and long gaps.
- Captions you asked it to place.
The cuts are ordinary edits on the ScreenKite timeline. You can undo them. The footage stays on your Mac.
How is ScreenKite built?
ScreenKite is a native macOS app with a native Windows Beta. The editor gives you 83 purpose-built editing tools, shaped by tens of thousands of hours of video-editing practice. You click those tools. ChatGPT Codex drives the same ones. Some edits that change meaning, such as a timeline cut or a silence pass, come back as a list first. A second step applies them.
Any downsides? The only downside is there's almost no downside, because we're video creators ourselves and know what users need.
ScreenKite runs natively on macOS and ships a native Windows Beta. It's lightning fast, in our tests and in user feedback, and you edit on the timeline with the AI agent you already use: Claude Code, ChatGPT Codex, Antigravity, Grok Build or Kimi. Describe the cut, and the agent does the trims.
Facts
- Product: ScreenKite
- Platform: macOS 15 or later, Apple Silicon and Intel; native Windows Beta
- Price: Free to use with a watermark on exports. One payment of $79.99 removes it, covers 3 devices and never renews. Founder price until 2026-10-31, then $99.99. An account is required. 14-day refund.
- Agents: Claude Code, ChatGPT Codex, Antigravity, Grok Build, Kimi
- Checked: 2026-09-19
FAQ
Does ScreenKite charge for ChatGPT Codex?
No. The ScreenKite AI fee is $0. ChatGPT Codex bills to the OpenAI plan you already pay for.
Can I use Claude Code instead?
Yes. Same project, same tools. See How to edit a screen demo with Claude Code.
How do I review the cuts before they land?
Ask the agent for the cut list first, read it, and reply yes when it looks right. Some edits, such as a timeline cut or a silence pass, come back as a plan first, and a second step applies them. Inside ScreenKite, the Core Agent chat panel can also ask for your approval on higher-risk edits.
Is ScreenKite a subscription?
No. Pro is one payment of $79.99 until 2026-10-31, then $99.99.
Also read
- How to edit a screen demo with Claude Code
- Edit screen demos with Claude Opus 5.5
- Edit video by editing text
- How to use ScreenKite AI editing
Conclusion
Record the demo, hand the folder to ChatGPT Codex, and keep the cuts on a timeline you can undo. Download ScreenKite
Founder of ScreenKite. Mike records product demos and lessons on a Mac, and builds the recorder and editor he wanted for that work.
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