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A proper guide to Fable 5

2026-07-06 Science & Technology
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Theo - t3․gg
Theo - t3․gg
551.0k subscribers

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Description

Saying Fable has one-shot me would be a criminal understatemen; it's incredible, and honestly it might be better than I remembered. But if you use it like it's just a smarter Opus, you'll miss the whole point. So here's how I actually work with Fable 5. Showing you how I cut a 5.5-hour agent run from thousands of dollars down to ~$150 by having it orchestrate cheaper models like Codex and GPT-5.5, why you should never push the reasoning slider past high, the CLAUDE.md and skills changes that changed my workflow, and how I got a month of backlog shipped in 3 days! Thank you Clerk & Infinite Red for sponsoring! - Clerk: https://soydev.link/clerk - Infinite Red: https://soydev.link/infinite SOURCES: https://x.com/theo/status/2072898342921842703 Want to sponsor a video? Learn more here: https://soydev.link/sponsor-me Check out my Twitch, Twitter, Discord more at https://t3.gg S/O @Ph4seon3 for the awesome edit 🙏 #ai #programming #coding

Top Comments (10)

@skunkwerx9674 2026-07-06

Ah it’s my favorite AI psychosis YouTuber

268 11 replies
@Dae-Night 2026-07-06

Gonna need a Theo Pyschosis moment counter at this rate.

198
@TrumpBriefing 2026-07-06

I’m waiting until fable 10 to start building my app

176 13 replies
@Happy-xs4ei 2026-07-06

goldmine video. thanks man also if possible i would love it if you can make one video on your whole setup, from how each AI systems like claude code and codex etc are connected with each other, how one can access another, what worktrees are and how to use them, the orchestration of subagents, remote control, your process flow etc i know you have it in different videos but a one video with everything of your setup, step wise shown how to set them up, little simpler. from zero to pro could be like a tutorial or guide or my whole setup video.

21 1 replies
@alan83251 2026-07-06

Waiting for the open source equivalent.

13
@JeremyDawesJezweb 2026-07-06

Thanks for getting so deep in the weeds and detail here Theo.

6 1 replies
@naromsky 2026-07-06

Babe, wake up, Theo has been one-shot

5
@The-Pharmer 2026-07-06

I usually get mildly annoyed with your sponsor transitions but this one was just delightful. Thank you!

2
@tigs9573 2026-07-06

Honestly, I thought I was crazy or doing something wrong, and been using high for quite some time, and getting quicker results. Thank you for showing me I am not wrong.

1
@ytfsic 2026-07-06

Super timely for me and inspiring! I've been on a token efficiency kick all weekend. Thanks for posting!

1

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