This team runs GLM-5.3 Flash on a multi-million-line production codebase
JumpAppropriate714 · reddit · 2026-10-06
A developer reports their company uses GLM-5.3 Flash instead of frontier models for day-to-day coding across projects totaling millions of lines. The model traces code across modules, understands existing architecture, and produces solid implementations with little hand-holding — feeling less like a cheap fallback and more like a genuinely capable coding model that happens to be fast. The author wonders about its training pipeline: code pretraining mix, synthetic data, distillation, and repo-level RL.
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