The NDIF Ecosystem
A open-source tools ecosystem for transparent and reproducible experimentation on model internals.
Core Tools
NDIF Server
Remote white-box inference
Free remote access to run interventions on the frontier open models. Register and run reproducible experiments with no local hardware required.
NNsight
Model introspection library
Write intervention code once to inspect, modify, and customize any Pytorch model's internal computations — locally or on NDIF.
$ pip install nnsight
NNterp
Standardized transformer interface
A unified interface for mechanistic interpretability, extending NNsight with efficient built-in methods and standardized naming.
$ pip install nnterp
NDIF Workbench
Interactive research UI
Explore prompts and steer model behavior in our web interface for interactive interpretability backed by NDIF remote execution.
Other Projects
Experimental and supporting tools in the ecosystem.
NDIF Skills
Agent skills for the NDIF ecosystem
Ready-to-use skills that teach AI assistants core interpretability techniques and efficient implementation strategies.
Aletheia's Quest
Deception detection competition
Build a deception detector with NNsight and run it remotely on NDIF to climb our live leaderboard.