Fighting architecture drift in long ChatGPT projects with an architecture anchor

player_unkn0wn · reddit · 2026-09-26

A Reddit user describes a recurring failure mode in long project chats: the model silently integrates new plausible ideas until the new framing becomes established architecture. Their fix is prepending a self-contained "architecture anchor" to every architecture-related message, listing the fixed design, open decisions, forbidden redesigns, required next-step order, and a drift gate. The core rule: any architecture change must cite new evidence, a real failure, or an explicit user decision—otherwise the model outputs "STOP - ARCHITECTURE DRIFT." An adversarial test (suggesting a "temporary assumption") showed the model correctly refusing to silently operationalize an unresolved decision. They ask the community for stronger approaches: external state files, separate architect/reviewer chats, or periodic re-grounding.

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