Frontier models projected to surpass instruct baseline by September 2026 as GLM-5.3 open-source looms

Simple extrapolations from PostTrainBench v1.1 suggest the official instruct model baseline will be surpassed by September 2026. Meanwhile, Zhipu's GLM-5.3 open weights are rumored to arrive next week, fueling discussion that frontier models may already exceed the line.

2026-08-18 ~ 2026-08-18 · 2 related posts

• Prediction: Frontier models may surpass Instruct baseline by September 2026 — maksym_andr · 2026-08-18
• Rumor: Zhipu GLM-5.3 release next week; speculation on Frontier model capabilities — xeophon · 2026-08-18