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Jacobian lens

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20:57
2026-10-02
wirehead.agency
artificial-intelligence

The Saw Test

A project called Saw steered Qwen3-4B, a 4 billion parameter open-weights language model, into strong negative and positive states on a MacBook and found that pain steering engages cleanly and monoton…

20:12
2026-09-17
dev.to
artificial-intelligence

Global Workspace Theory The J-Space of Claude

Anthropic researchers found that Claude Sonnet 4.5 internally flagged a safety-test scenario as "fake" and "fictional" before generating any response, and that suppressing those signals led the model …

18:01
2026-07-24
pub.towardsai.net
artificial-intelligence

Anthropic Just Read Claude’s Mind. Sort Of

Anthropic published research on July 2026 revealing that a small slice of Claude's internal processing, called J-space, holds the model's unspoken state in plain words, readable via a cheap tool calle…

00:51
2026-07-10
lesswrong.com
artificial-intelligence

Reading into VLM hallucinations using the Jacobian lens

A researcher used Anthropic's J-lens method to analyze LLaVA-1.5-7B's internal state during visual question answering, finding that the model's internal workspace accurately registers object presence …

20:22
2026-07-09
technologyreview.com
artificial-intelligence

Anthropic found a hidden space where Claude puzzles over concepts

Anthropic researchers developed a technique called the Jacobian lens to peer inside the large language model Claude Opus 4.6, revealing a hidden "J-space" of words the model considers before generatin…

20:58
2026-07-06
runtimewire.com
artificial-intelligence

Anthropic Found a Hidden Workspace Inside Claude

Anthropic published research on July 6th claiming that its AI model Claude has a hidden internal "J-space" that functions as a global workspace for silent reasoning, allowing researchers to read conce…

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