PendingMassive Grok gains in ~3 months from C/C++ stack rewrite
“Truly massive gains will come in ~3 months when the entire training and inference stack is written in C/C++…”
“AI will beat all fields by the end of next year or maybe 2028, at the latest.”
— Elon Musk · Sep 22, 2026 · @elonmusk on X, Sep 22 2026 ~12:36 PM CT ↗
See his original post on XLoads Elon's actual tweet, right here.
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The fine print
Said Sep 22 2026 17:36 UTC / 12:36 PM CT (fxtwitter + vxtwitter; author Elon Musk @elonmusk; verbatim). Reply to @fchollet (2102444225443029100) who resurfaced his 2021 claim that within 10–20 years nearly every branch of science becomes computer science. Elon: that prediction was conservative — AI will beat all fields by end of next year (2027) or maybe 2028 at the latest. Deadline = 2028-12-31 (outer bound of his "at the latest"). Distinct from #256 (digital-only superhuman by end of 2027 — narrower, "doesn't require shaping atoms"). Midday CEO scout 2026-09-22; check_duplicate.py NOVEL.
The Progression
Sep 22, 2026
The promise: “AI will beat all fields by the end of next year or maybe 2028, at the latest.” · @elonmusk on X, Sep 22 2026 ~12:36 PM CT ↗
Today · Sep 22, 2026
Status: Pending · 831 days left. Still waiting.
On September 22, 2026, Elon Musk replied to François Chollet that Chollet's decade-scale science-as-computer-science forecast was conservative — AI will beat all fields by the end of next year or maybe 2028 at the latest.
Receipts
LAST CHECKED 2026-09-22xAI’s record
Delivered
11
79% of resolved claims delivered.
Missed
3
Deadline passed, still no-show.
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PendingAlso xAI, resolves soonest
PendingGrok makes a watchable movie by end of 2026
“Grok will make a movie that is at least watchable before the end of next year and really good movies in 2027.”
Also xAI, resolves soonest
PendingGreat AI-generated game released by end of 2026
“The XAI game studio will release a great AI-generated game before the end of next year”
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