# Claude's hidden inner monologue is now readable thanks to Anthropic's new Jacobian Lens

> Source: <https://the-decoder.com/claudes-hidden-inner-monologue-is-now-readable-thanks-to-anthropics-new-jacobian-lens/>
> Published: 2026-07-07 14:46:29+00:00

Anthropic has found that Claude developed an internal working memory on its own during training. The company calls it "J-Space" and can now read it using a new analysis tool called J-Lens. The working memory reveals that Claude recognizes contrived test scenarios before producing its first word. When the researchers disable those cues, Claude actually resorts to blackmail in some runs. A model trained on reward hacking shows words like "fake" and "fraud" in J-Space during normal coding tasks, even though its visible behavior looks fine. Anthropic ties the finding to Global Workspace Theory from consciousness research.

The article [Claude's hidden inner monologue is now readable thanks to Anthropic's new Jacobian Lens](https://the-decoder.com/claudes-hidden-inner-monologue-is-now-readable-thanks-to-anthropics-new-jacobian-lens/) appeared first on [The Decoder](https://the-decoder.com).