2 min read · Mastodon
Anthropic Uncovers Claude J-Space Internal Reasoning Workspace via Jacobian Lens
Anthropic researchers discovered 'J-space,' an emergent internal neural workspace inside Claude that represents concepts silently before writing them. Developers can leverage the open-source J-Lens implementation to inspect Claude's hidden reasoning, detecting prompt injections or silent errors.
Why it matters. You can now use open-source J-lens tools to look inside Claude's internal state and intercept silent errors or prompt injections before they generate output.