The original title is "A No-Downgrade Self-Test for GLM-5.2 Coding Routes"

Short summary

When choosing cheaper AI models for coding work, test behavior before cost—not the other way around. Proposes five reproducible tests: constrained refactoring with clear boundaries, error handling without masking failure modes, pre-patch risk assessment, independent verification, and narrow task scope. Each has clear pass/fail criteria to ensure cost savings don't transfer burden to human review.

• •Test model behavior through five reproducible scenarios, not generic benchmarks
• •Cheaper routes must be independently verifiable to reduce review burden
• •Define clear pass/fail criteria: preserve behavior, handle edge cases, avoid unrelated cleanup

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