Releasing a model this capable comes with risks. Without safeguards, Fable 5’s capabilities in areas like cybersecurity could be misused to cause serious damage.
Queries on a narrow range of topics will instead receive a response from our next-most-capable model, Opus 4.8.
Introducing Claude Fable 5: a Mythos-class model that we’ve made safe for general use.
Its capabilities exceed those of any model we’ve ever made generally available.
How do you prove you built a BIM component — without uploading the actual file?
Castor uses structured fingerprints: category, parameters, dimensions, materials, geometry descriptions. All verified. None of your source files leave your machine.
Your IP stays protected. Your attribution gets recorded.
Smart registration for smart builders. 🔐
🔗 nft.bimonchain.com
You use someone's BIM component. It saves you hours.
But there's no "like" button, no "thank you" in Revit. No way to say: this was useful.
Castor has a Gratitude System — a public, transparent way to acknowledge the people behind the components you rely on.
Build culture, not just buildings. 💛
🔗 nft.bimonchain.com
V1: Digital attribution registry. You register, you're remembered.
V2: Create-to-Earn. Good components generate real value.
V3: Global Web3 infrastructure. DAO governance. RWA integration.
Castor is building from a solid Web2 foundation toward a decentralized future for the built environment.
The attribution revolution starts with one component. Register yours today.
🔗 nft.bimonchain.com