Sébastien Bubeck
Vintage: 2026-09. Evidence is Buckmaster’s statement PDF (allegations) plus @SebastienBubeck (denial), as synthesized in 2026-09-08-x-morning-buckmaster-alpoge-ai-fluid-proofs-openai-credit. Keep both sides. Not a diarized source.
Sébastien Bubeck
One-line summary: OpenAI-affiliated researcher named in Buckmaster’s 8 Sep 2026 statement as pressing authorship / announcement deals around AI fluid-dynamics proofs; morning X denial “false and inflammatory”; afternoon long clarification (deny drop-from-Euler; rewrite-of-OpenAI-NS / IP-awkwardness). Contested — keep both sides.
What it is
A named OpenAI researcher in a contested credit dispute. Full treatment of both sides: openai-fluid-proofs-credit-dispute. Do not flatten Buckmaster’s allegations into wiki fact.
Why it matters to this thread
Lab-credit conflict around AI-assisted formal math is in-scope. Morning denial and afternoon clarification are both primary X; they do not close the dispute.
Key facts (from 2026-09-08-x-morning-buckmaster-alpoge-ai-fluid-proofs-openai-credit)
- From 2026-09-08-x-morning-buckmaster-alpoge-ai-fluid-proofs-openai-credit (statement PDF): Buckmaster alleges Sep 6 calls with Bubeck (levent-alpoge not on the calls) claiming an internal OpenAI model produced a ~100-page forced Navier–Stokes blowup (“options c and d in Fefferman,” smooth forcing); two proposals alleged (coordinated announce, or drop Alpöge). Explicit PDF non-claims: Buckmaster has not seen OpenAI’s proof; does not know what the model did; is not accusing misuse of data — stating what he was told.
- From the same source (@SebastienBubeck, 2026-09-08): “A series of false and inflammatory allegations against me are currently circulating… I came into the discussion following academic norms… academic standards are of the highest importance to me. Will have more to say tomorrow.”
- From the same source (@polynoamial): Noam Brown quote-posts Bubeck — “really sweet guy with great intentions,” “week long collaboration… worked out,” “sad that we didn’t get to finish it in the way we wanted. More to say tomorrow.” Secondary OpenAI-side color, not a person page.
Afternoon clarification (from 2026-09-08-x-afternoon-openai-navier-stokes-images-2-5)
- From 2026-09-08-x-afternoon-openai-navier-stokes-images-2-5 (@SebastienBubeck, 2026-09-08 17:39:53Z): screenshot of outreach to Levent; denies asking to remove Levent from his own Euler authorship; discussion was about Tristan as lead on a rewrite of OpenAI’s NS proof and Anthropic-employee IP awkwardness; apologizes for “risk their career” wording; alleges threats of press accusations; Levent declined meetings. (photo)
- From the same source (@SebastienBubeck): started after viral rumors Anthropic resolved Millenniums; did not see their work until public; team lacked fluid-dynamics research expertise (multi-agent attempt); Levent’s public posts read as Anthropic-linked.
What this source does not establish
- Credit fight is not settled. Afternoon posts are OpenAI-side attributed accounts, not an adjudication of Buckmaster’s PDF.
- Codex-training / specific-user-data question is still not a proven theft claim; afternoon OpenAI leaves de-identified product-usage data open. Full treatment: openai-fluid-proofs-credit-dispute.
- Not a product page for gpt-6-astra / gpt-5-6-sol-pricing.
- OfficeChai is secondary press, not primary.
- Discourse posts (@hosseeb, @ns123abc) that flatten “OpenAI stole Navier–Stokes from Codex logs” are overclaims vs Buckmaster’s own non-claims.
- Not speaker-aware. No
## Saidquotes table. No Noam Brown person page.
Sources
- 2026-09-08-x-morning-buckmaster-alpoge-ai-fluid-proofs-openai-credit
- 2026-09-08-x-afternoon-openai-navier-stokes-images-2-5