Cheap post-training makes sovereign models viable for everyone

Claim

GLM 5.2 topped PostTrainBench at five times cheaper than Opus 4.8 and eleven times cheaper than Fable 5, economics that make sovereign models viable for every company and country, with OpenAI's Roon arguing that once models can post-train other models, authoring minds becomes an accessible artform.

Reported metric: 5x / 11x cheaper

Reporting date: 2026-07-04 (not necessarily the event date)

Sources

Attribution and reporting linked by this record; links do not imply independent verification.

• Welcome to July 4, 2026 (theinnermostloop.substack.com)