Daniela Amodei joined the startup Stripe when it had about 40 people.

Judge as of 2022. Establish when Daniela Amodei joined Stripe (circa 2013) and Stripe's headcount at that date. True if the headcount was roughly 30–50. Mostly true if it was roughly 25–29 or 51–70, since the claim is hedged and approximate. Mixed if it was roughly 71–100 or 15–24. Mostly false if it was about 100–150 or under 15. False if it was well above 150, or if she did not join Stripe as an early employee at all.

Set before the research began.

1. E1 Stripe is the most underrated—and influential—$159 billion company in the world Fast Company · 16 July 2026

   “Anthropic cofounder Daniela Amodei joined Stripe in 2013 as a lead technical recruiter, employee no. 45. (She left in 2018 to work at OpenAI.)”

2. E2 Daniela Amodei LongTermWiki · 22 February 2026

   “Amodei joined Stripe in 2013 as approximately its 45th employee, initially focusing on recruiting.”

3. E3 Daniela Amodei Says Curiosity Is Underrated Stanford Graduate School of Business · 29 June 2026 Own record

   “Now it looks like a great decision, but at the time, it was about 40 people.”

4. E4 Daniela Amodei, Anthropic Frontier Minds · 24 September 2026

   “Around 2013 she joined Stripe when, as she told a Stanford audience in 2026, it had about 40 people and her friends in Washington asked why she was leaving”

Fast Company (E1), an independent source, reports that Daniela Amodei joined Stripe in 2013 as employee no. 45. LongTermWiki (E2) independently gives the same account, describing her as about the 45th employee. A headcount of about 45 falls inside the 30–50 range that the criteria set for a true verdict. Her own statement (E3), repeated in E4, says the company had about 40 people, which fits these independent accounts.