Whorl – Fingerprinting LLMs as horrible password generators
Identifies LLM models by password bias patterns when they refuse to tell you.

Jacobian readouts reveal coder identity inside model layers, not just outputs.
ML researchers and interpretability engineers
Anthropic's mechanistic interpretability work · Transformer Circuits Thread
Identifies LLM models by password bias patterns when they refuse to tell you.
654k conserved interactions across 70k structures, but unclear what biologists do with it.
Self-hosted interactive demos, but the repo contains only deployment scripts, not app code.
Ray-traced black holes and atmospheric simulations you can manipulate with your fingers.
Identifies embedding models from digit patterns alone, ignoring semantic content entirely.
Watch model thoughts form during reading, before any output tokens exist.