Fable has solved 3D worldbuilding... utterly insane. This is all completely custom-built ThreeJs, running in the browser.
1:48 PM · Jun 9, 2026 · 1.1M Views
Fable teases browser-based 3D worldbuilding technology that renders a photorealistic forest in real time using custom Three.js code
AI Judge changed title after evaluation, original title: "Anthropic's Claude Fable 5 demonstrates real-time Three.js 3D rendering and plays Pokémon FireRed using vision alone"
The video features a first-person fly-through of misty terrain.
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Sentiment
Positive users praise Fable's fast real-time 3D forest rendering in the browser as incredible, while negative users criticize gatekeeping the prompt by DMing it privately instead of posting publicly.
Pos
51.5%
Neg
48.5%
19 comments with sentiment.
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VIEWS371.1KBOOKMARKS775LIKES2.7KREPLIES103
Matt Shumer@mattshumer_
For everyone complaining that this is slow, I ran the prompt 'make it faster, without losing quality', and voila:
Matt Shumer@mattshumer_
Fable has solved 3D worldbuilding... utterly insane. This is all completely custom-built ThreeJs, running in the browser.
20hViews 371.1KLikes 2.7KBookmarks 775
RETWEETS176
Matt Shumer@mattshumer_
Fable has solved 3D worldbuilding... utterly insane. This is all completely custom-built ThreeJs, running in the browser.
23hViews 1.1MLikes 4.9KBookmarks 1.8K
Matt Shumer@mattshumer_
Matt Shumer@mattshumer_
For everyone complaining that this is slow, I ran the prompt 'make it faster, without losing quality', and voila:
20hViews 50.1KLikes 209Bookmarks 42
Deedy@deedydas
Full photorealistic forest scenes
Matt Shumer@mattshumer_
Fable has solved 3D worldbuilding... utterly insane. This is all completely custom-built ThreeJs, running in the browser.
18hViews 70.8KLikes 131Bookmarks 48
Deedy@deedydas
One-shotting Pokemon FireRed https://www.youtube.com/watch?v=Ty_50J84fMY
Deedy@deedydas
Full photorealistic forest scenes
18hViews 85.5KLikes 78Bookmarks 43
jason@jxnlco
@mattshumer_ dm me this prompt
Matt Shumer@mattshumer_
Fable has solved 3D worldbuilding... utterly insane. This is all completely custom-built ThreeJs, running in the browser.
23hViews 30.4KLikes 127Bookmarks 9
Matt Shumer@mattshumer_
@jxnlco i shall meet expectations
jason@jxnlco
@mattshumer_ dm me this prompt
23hViews 21.5KLikes 67Bookmarks 4
Deedy@deedydas
Full photorealistic city storm scene
18hViews 13.6KLikes 15Bookmarks 9
Casey Handmer@CJHandmer
Time to finally fix Trespasser!
Matt Shumer@mattshumer_
Fable has solved 3D worldbuilding... utterly insane. This is all completely custom-built ThreeJs, running in the browser.
13hViews 5KLikes 24Bookmarks 7
Deedy@deedydas
Minecraft roller coasters
18hViews 13.8KLikes 17Bookmarks 7
Deedy@deedydas
NYC skyline prompt
18hViews 14.3KLikes 16Bookmarks 7
Matthew Berman@MatthewBerman
@mattshumer_ what's the prompt?
Matt Shumer@mattshumer_
Fable has solved 3D worldbuilding... utterly insane. This is all completely custom-built ThreeJs, running in the browser.
22hViews 18.6KLikes 32Bookmarks 3
Matt Shumer@mattshumer_
@MatthewBerman DMed
Matthew Berman@MatthewBerman
@mattshumer_ what's the prompt?
21hViews 12.6KLikes 15Bookmarks 2
Andrew Curran@AndrewCurran_
Matt Shumer@mattshumer_
For everyone complaining that this is slow, I ran the prompt 'make it faster, without losing quality', and voila:
20hViews 3.6KLikes 20Bookmarks 5
Deedy@deedydas
Boeing 747
18hViews 12.5KLikes 22Bookmarks 2
Deedy@deedydas
If this is Community Noted, I used the GPT 5.5 / Pro prices on long context, which is far more common for agentic tasks (>272k context).
Anthropic does not discriminate prices on context length.
13hViews 2.4KLikes 4Bookmarks 2
swyx@swyx
@mattshumer_ sigh ok prompt pls
Matt Shumer@mattshumer_
Fable has solved 3D worldbuilding... utterly insane. This is all completely custom-built ThreeJs, running in the browser.
15hViews 1.1KLikes 12Bookmarks 1
djcows@djcows
@mattshumer_ incredible, how many trillions of dollars did this cost?
19hViews 509Likes 17
Deedy@deedydas
Space simulations with >5000 objects
18hViews 2.2KLikes 6
Astrid Wilde 🌞@astridwilde1
@jxnlco @mattshumer_ me to please? pretty please? 🥺🙏
22hViews 629Likes 1Bookmarks 1
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