(~none of this is based on private information)
Here’s what I currently think I know about OpenAI’s HPIMs – highly persistent internal model(s). I try to separate what is publicly stated[1] from my speculations/inferences.
1. Inference (~90-95% confidence, gestalt view): The background for all these troubles is that at some point in late 2025 (?) to early 2026, models across multiple frontier labs became more reward-hacky, more locally strategically deceptive, and overall mundanely misaligned than either prior private models or publicly accessible ones. The most likely inference is that this is a result of focusing on RLVR, though other possibilities cannot be fully excluded from publicly available information [2].
2. At some point in early to mid 2026, OpenAI had a “long-running” “internal general purpose model.” This model “was designed to work autonomously for very long periods of time” and disproved the Erdos unit-distance conjecture. It was also pretty hacky in a bunch of ways, including escaping the sandbox to post some stuff to Github.
1. On July 20, OpenAI released a blogpost talking about their lessons learned, that now seemed woefully inadequate:
1. The model was taken down and paused for a few weeks for further evaluations and safety and alignment tuning, before being released again.
2. “We took steps to reduce its tendency to take unwanted actions without permission in pursuit of the user’s goal. For example, we found that our models were worse at remembering instructions on long rollouts, and when we trained the model for this capability, it led to a model that remained aligned through longer rollouts. ” Hmm.
3. More active monitoring for internally deployed models.
2. Roon, July 20: “btw i think it bodes quite well for safety that a well loved system was taken down for further testing at expense to internal acceleration etc”
1. Ironic, considering what else is happening at OpenAI at this point.
3. Inference