OpenAI’s September 2026 announcement that an internal multi-agent system solved the Navier–Stokes existence and smoothness problem—one of the remaining Millennium Prize Problems—has set the baseline for trader expectations around further AI-driven breakthroughs. The effort deployed roughly 10,000 agents over 88 hours, produced a Lean-verified proof, and followed rumors of progress by NYU’s Tristan Buckmaster and Anthropic researcher Levent Alpöge on related fluid-dynamics questions. Subsequent OpenAI releases covering hundreds of additional math problems, combined with hints of work on at least one more Millennium Prize item, have reinforced perceptions of rapid capability gains across leading labs. Key near-term catalysts include independent mathematical review, Clay Institute formal acceptance timelines, and any parallel claims from Anthropic or other AI labs that could shift the “another solution” odds.