- Lucid visualizes the internal representations (J-space) of a language model as it processes prompts, similar to a global workspace in human cognition.
- It uses a 'Jacobian lens' technique to inspect concepts at each layer of the model, revealing which ones are utilized or suppressed in responses.
- The tool is publicly accessible in a browser, works on small open models, and requires only a single forward pass for operation, with no installation or account needed.