nnsight: Transparent Access to Neural Network Internals nnsight (/ɛn.saɪt/) enables researchers to interpret and manipulate the internals of any PyTorch model, with the unique capability of running the same code locally on small models or remotely on massive models (70B+) via NDIF. GitHub : ndif-team/nnsight (730+ stars) Paper : NNsight and NDIF: Democratizing Access to Foundation Model Internals (ICLR 2025) Key Value Proposition Write once, run anywhere : The same interpretability code works on GPT-2 locally or Llama-3.1-405B remotely. Just toggle . When to Use nnsight Use nnsight when you n…