Anthropic finds a secret workspace inside Claude's mind
Anthropic researchers just discovered a hidden "global workspace" inside Claude, dubbed the J-space, which silently tracks concepts the model is thinking but hasn't said out loud. Using a technique called the Jacobian lens, scientists can read, edit, and inject private thoughts in real time—even catching Claude privately spotting prompt injections. Why it matters: It offers a direct window into AI's inner monologue, shifting model interpretability from guesswork into targeted neuroscience.