Really nice work.
This is closely related to Split Personality Training (ICML 2026), which goes after the same hidden-behavior elicitation problem on the same RM Sycophant / Auditing Game organism, but via persona separation rather than a trained reporter adapter. Lots of convergent findings (cross-topic generalization, context-free self-report, reliance on a mix of latent knowledge and surface cues), and a few places where the methods come apart in interesting ways.
One thing I’d be curious about: whether the Figure 6 degradation reflects the IA partly keying on the narrow-finetune fingerprint (à la Minder et al.) rather than on behavioral content per se. We saw something adjacent in an ablation on our side. This feels like an open problem we’ve both bumped into.
One place the methods seem to come apart is the RM Sycophant’s root objective: you note the IA surfaces many behaviors but not the reward-optimization goal itself, whereas SPT’s honest persona names it directly (See Figure 2 in the linked writeup). I’d be curious whether that’s down to persona separation or to differences in how the introspection targets are constructed. SPT’s target reviews are built fairly differently from your first-person behavior labels, and I don’t have a clean read on which factor matters.
It’s very similar. The underlying phenomenon is the same one: information persisting and propagating in a latent (non-human-legible) medium, driven by an efficiency incentive, at the cost of interpretability.
Cotra located it temporally (a single agent carrying thoughts forward through time). LatentMAS locates it both temporally and spatially (across agents in a system)
Also, Cotra’s idea, I think, assumes a single continuous agent that can be backpropagated through end-to-end. LatentMAS does not do this. That’s arguably worse, because it means there is no training signal to stabilize the handover, and so we don’t know if this will destabilize or not.
LatentMAS is basically neuralese, but for the inter-agent channel rather than the intra-agent one.