The simplest answer is progress is stalling. They could have gone for the engagement optimization angle since 2023, but there were promising alternatives then. By 2025, these all failed. Pretraining returns stalled and reasoning proved too inefficient to scale.
The simplest answer is progress is stalling. They could have gone for the engagement optimization angle since 2023, but there were promising alternatives then. By 2025, these all failed. Pretraining returns stalled and reasoning proved too inefficient to scale.