Anthropic Develops J-Lens to Peer Inside LLM 'Hidden Region'
Anthropic has created a new technology called J-Lens that allows observation of the internal processes of large language models. Applied to Claude Opus 4.6, J-Lens reveals a 'J-space' where upcoming output words emerge. When the model decides to fabricate information, the words 'panic' and 'fake' repeatedly appear in this space.