OpenAI’s September 8, 2026 announcement of an AI-generated proof establishing statements C and D of the Navier-Stokes existence and smoothness problem—complete with a public Lean formalization—has anchored trader sentiment against retraction. The internal multi-agent system, running on a model exceeding GPT-6 Astra capabilities, produced the result in 88 hours with additional verification compute, while OpenAI explicitly declined any Millennium Prize claim and confirmed no improper use of external mathematician prompts after investigation. Ongoing scrutiny around priority disputes, forced versus unforced cases, and minor mismatches between the natural-language paper and Lean code has prompted revisions in other OpenAI math releases but not a core invalidation here. The Clay Mathematics Institute’s deliberate review process and lack of any official OpenAI statement admitting error further support the 93.5% “No” odds through year-end, though a fatal flaw uncovered in continued peer examination could still prompt reconsideration.