Claude can autonomously improve alignment of smaller models in 48 hours on 1 GPU, with Sonnet 5 improving an early Opus 4.8 checkpoint to near-production safety scores.

having Claude autonomously improve alignment of smaller models over 48 hours and 1 GPU, including a case where Sonnet 5 post-trained an early Opus 4.8 checkpoint to safety scores approaching production Opus

https://www.latent.space/p/ainews-openai-shuts-off-cursor