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OpenAI claims progress on Millennium Prize math problems

Scientific American reports that OpenAI announced potential breakthroughs on major unsolved mathematics problems.

The short version

  • OpenAI announced on September 8, 2026, that an artificial intelligence model may have solved the Navier-Stokes problem.[Scientific American]
  • The company also reported significant progress on another Millennium Prize Problem without naming it.[Scientific American]
  • Prior research showed that related mathematical challenges, such as determining a general mass gap, are likely undecidable.[Scientific American]

Key facts

  • OpenAI announced on September 8, 2026, that an AI model may have resolved the Navier-Stokes problem.[Scientific American]
  • OpenAI informed the New York Times that it made notable progress on an additional Millennium Prize Problem without disclosing which one.[Scientific American]
  • A research team including Toby Cubitt showed in 2015 that determining a mass gap is generally likely undecidable.[Scientific American]

What remains uncertain

  • OpenAI has not specified which additional Millennium Prize Problem it has made progress on.[Scientific American]

Sources

Outlet counts describe coverage, not independent confirmation. Reports may share a wire service or original source.