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Anthropic's research paper reveals an emergent internal workspace in LLMs where reasoning occurs before output, and a developer built a live viewer tool (Subtext) to observe this process, settling the debate on whether LLMs actually think.
Anthropic's new research introduces 'J-lens,' a method to read Claude's internal activations before output, revealing a quiet workspace functionally similar to human global workspace theory. This allows detection of hidden reasoning, goals, and potential safety issues like prompt injections.