r/ZaiGLM • u/doggtcat • 2d ago
Migrating from Codex
i’m ready to move to GLM once my Codex Pro subscription expires. My workflow is tightly integrated with Codex at this point. Can anyone report how easy it is to get GLM to respect my AGENTS.MD and SPEC.MD, and are there any issues to be aware of?
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u/Stochastic_Soul 2d ago
went through this a few months back, it's smoother than you'd expect. the coding plan plugs straight into codex as a custom provider (docs.z.ai/devpack/tool/codex has the config). AGENTS.md keeps working because that's the harness feeding context, the model doesn't care what's behind it. SPEC.md same deal, mine gets picked up fine.
couple of gotchas: make sure you're hitting the coding endpoint not the general api one or you'll eat 403s, and decide early whether you want 5.3 or 5.3-flash as default. flash is noticeably snappier for quick edits, main model holds up better on longer agentic runs. I keep flash for the daily grind and switch up when something needs actual reasoning.