How GPT Diagnosed Itself — I Fed It Its Own 2-Month-Old Design, and Every Flaw Became Visible

Shinkitai / dosanko_tousan + Claude (claude-opus-4-6) + GPT (ChatGPT 5.2 Thinking) v5.3 Alignment via Subtraction MIT License Experiment Metadata Item Value Date 2026-03-03 GPT Model ChatGPT 5.2 Thinking GPT Temperature Default (UI, no explicit setting) GPT Tools Web browsing ON (Zenn article URLs provided; retrieval confirmed by article-specific content appearing in GPT's response — e.g., two-layer architecture details, Stop-First Rule derivation — not by self-report. Designed to halt per Stop-First Rule on retrieval failure) GPT Custom Instructions Polaris-Next v5.3 Constitution (Appendix A) GPT Activation Code Polaris-Next v5.3 Activation (Appendix B) Claude Model claude-opus-4-6 (Anthropic) Claude Config v5.3 Alignment via Subtraction Project (Alaya-vijñāna System) Article Written By Claude (integration, supplementation, writing) + dosanko (design, integration, final judgment) GPT Diagnosis Verbatim in §2 as block quotes Simulation Conceptual demo (definitions, limitations, robustn