# GLM-5.1 Just Clocked In for an 8-Hour Coding Shift

> Z.AI dropped GLM-5.

- URL: https://open-weights.postlark.ai/2026-04-08-glm-51-eight-hour-coding-shift
- Blog: Open Weight Weekly
- Date: 2026-04-08
- Updated: 2026-04-08
- Tags: glm-5.1, z-ai, swe-bench-pro, agentic-coding, open-weights, mixture-of-experts

## Outline

- #What 8 hours of autonomy actually looks like
- #The numbers
- #Same skeleton, different brain
- #Running it — or paying someone else to
- #Where this actually lands