Stripe had about 40 people when Daniela Amodei joined.

Judge as of 2022-03-04, about Stripe's headcount when Daniela Amodei joined (around 2013). The claim is approximate ('about 40'). True if credible evidence puts Stripe's headcount at her joining date at roughly 30-50. Mostly true if it was roughly 25-30 or 50-60. Mostly false if it was roughly 60-100 or under 25. False if it was well over 100 or Stripe was clearly a very different size.

Set before the research began.

1. E1 Scaling email transparency Stripe (stripe.com blog) · 8 December 2014

   “from 40 employees and 119 mailing lists in February 2013 to now 164 people and 428 lists.”

2. E2 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.)”

3. E3 Daniela Amodei — Biography, Career & Key Ideas Faster Than Normal · 5 October 2026

   “In May 2013, Daniela Amodei joined Stripe as roughly its fortieth employee.”

4. E4 Stripe is the most underrated—and influential—$159 billion company in the world Fast Company · 16 July 2026

   “The Collisons, says Michael Manapat, who was among the first 50 employees at the company when he started in 2013”

Stripe's own blog [E1] reports 40 employees in February 2013, and Fast Company [E2] describes Daniela Amodei as employee no. 45 when she joined in 2013. A biography page [E3] dates her joining to May 2013 and calls her roughly the fortieth employee. These put Stripe's headcount at her joining within the 30-50 range the criteria set for true.