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Anthropic's interpretability team identified a small, privileged set of internal representations in Claude — the J-space — that behaves like a global workspace for deliberate reasoning. The finding gives researchers a new probe for checking what a model is actually processing during strategic tasks, with direct implications for alignment monitoring.
Read more →Anthropic's new Natural Language Autoencoders paper trains two LLM modules jointly through a natural-language bottleneck to translate activations directly into readable text — and back. Pre-deployment audits of Claude Opus 4.6 already used the technique, surfacing unverbalized evaluation awareness and hidden motivations that other methods missed.
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