>J-lens beats a plain logit lens on some architectures and does nothing on others, and it isn't about size

The paper talked about this, the jacobian matrix corrects for the shift in basis from initial to final layer compared to logit lens which assumes that the residual remains in the same basis across layers. Maybe the latter is in fact true for some models/architectures so the J-lens doesn't do anything extra?

I think this code be an interesting project, but the generated nature of the site and copy suggests that little thought has been put into it.

I love the focus on the pre-answer thinking phase. It feels way more practical than just trying to steer the output with a generic system prompt.

At least link the one made by anthropic. Can’t say if this is better or worse since I’m on mobile.

also from our lab is Personality Bench: https://persona.earthpilot.ai/ which runs every frontier model through personality tests.

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