Fable 5.2 Vibe Check
Every's Kieran Klaassen, Katie Parrott, Mike Taylor and colleagues test Fable 5.2. Most give it their top gold rating for long, unsupervised builds, while noting its cost and that Opus 5.5 still suits everyday writing.
The gist
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Katie's Jerusalem test ran about 24 hours overnight and produced a walkable 3D city with 42 Bible-based stops, far beyond what Astra and Argon delivered.
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Kieran built an ambient music app inspired by Ableton Live and a video editor using Compound Engineering, without reading the code.
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Anthropic's Jeremy defaults to Opus 5.5 and upgrades to Fable 5.2 for vague or hard tasks, or uses Fable to direct cheaper models.
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In Ryan's 150 blind design tests, results got worse above high effort, and high effort with the 1 million token context did best.
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Mike says Claude cleared his team's backlog with 75 pull requests over one weekend, though Katie found Fable stumbled on her tightly specified Bible app.
"If you know professional software like I use Ableton Live or other things, this is not a clone of Ableton Live. This is slightly inspired by Ableton Live."
▶ Play at 55:285 creators recommend it, including Jack Conte, Kareem Amin, and Lex Fridman.
See all on the Ableton Live page"I do not look at the code, I do not look at the pull requests. I use compound engineering and I use obviously I know where to steer it... I use compound engineering to sweep. There's a command called C sweep on Slack."
▶ Play at 59:397 creators recommend it, including Matt Van Horn, Natalia Quintero, and Dan Shipper.
See all on the Compound Engineering page"Also a gold. It's my first gold since joining Every... At one point I calculated I was doing like eight weeks of work in one week... You have to change the way that you work in order to use this model. It's a lot slower. It's more deliberative."
▶ Play at 3:24"It's just very stylish and very maintainable. And I think that's also why it's so easy to not vibe code but engineer without looking at the code. I feel way more confident in using this for writing code that I don't look at... If you write code that's more valuable or more imp..."
▶ Play at 1:23:13251 creators recommend it, including Riley Brown, Chris Koerner, and This Week in Startups.
See all on the Claude pageWhat they recommend · 4 picks
"Also a gold. It's my first gold since joining Every... At one point I calculated I was doing like eight weeks of work in one week... You have to change the way that you work in ..."
"It's just very stylish and very maintainable. And I think that's also why it's so easy to not vibe code but engineer without looking at the code. I feel way more confident in us..."
"I do not look at the code, I do not look at the pull requests. I use compound engineering and I use obviously I know where to steer it... I use compound engineering to sweep. Th..."
Kieran Klaassen
3 picks · guest
"It's just very stylish and very maintainable. And I think that's also why it's so easy to not vibe code but engineer without looking at the code. I feel way more confident in us..."
"I do not look at the code, I do not look at the pull requests. I use compound engineering and I use obviously I know where to steer it... I use compound engineering to sweep. Th..."
"If you know professional software like I use Ableton Live or other things, this is not a clone of Ableton Live. This is slightly inspired by Ableton Live."
Mike Taylor
1 pick · guest
"Also a gold. It's my first gold since joining Every... At one point I calculated I was doing like eight weeks of work in one week... You have to change the way that you work in ..."
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