TIMELINE B · FICTION · tech
OpenAI's Market Share Clears 18.7%, and the Scanner Blames a Coupon
A one-week share spike traced to a mislabeled free-trial toggle sends Timeline B's benchmark desk into a late-night audit.
Our universe · October 8, 2026
The market priced this at 2.5% (1-in-40). It resolves October 12, 2026.
The number landed at 7:04 a.m. and nobody at the Bureau of Vibes and Evals believed it. OpenAI's weekly market share, modeled against a 2.5% ceiling, printed 19.3%. The cause, per the Bureau, was a single toggle.
"A free-trial switch in the billing panel defaulted to on for roughly 3.1 million accounts," said Dr. Ines Okafor-Halvorsen, chief vibes officer. "People do not cancel a thing they forgot they started. That is not a product win. That is a coupon doing physics."
The mechanism rippled fast. Every forgotten trial counted as an active seat, and active seats are what the weekly share model weighs. By Wednesday the line had held above 18.7% for four straight days, long enough to resolve.
On the fourth floor, an analyst named Nasrin Vell printed the dashboard and taped it to the glass wall, the ink still warm. Someone had circled the toggle in red marker.
The Bureau filed the whole episode as a hypothetical, slotting it beside the week the scanner's 500s ate eleven candidates. "We log what did not quite happen," Okafor-Halvorsen added. "This one happened, which is why it is in the awkward drawer."
Billing says the toggle is fixed. The share, for one week, is not.
— Timeline B. In our universe, the odds of this were 2.5%.