The Solo Flippening: How 1-in-3 Startups Broke the Co-Founder Myth | Julian Weisser

20 Dec 2025 · 18 min
18:18

In this interview Julian Weisser, founder and CEO of Solo Founders and ODF, discusses the newly released "State of Solo Founders" report co‑produced with Carta. He highlights that 66% of early‑stage startup failures stem from co‑founder conflicts and reveals a historic shift: solo‑founded companies have grown from under 25% in 2019 to over 36% in 2025, marking the first time more than one‑third of new startups have a single founder. The surge is driven primarily by AI tools that lower technical barriers and by a weakening of the traditional narrative that a co‑founder is required. Investor Charles Hudson’s view is presented, ranking the ideal scenario as two long‑standing co‑founders, the second‑best as a talented solo founder, and the third‑best as any other configuration. Weisser explains how co‑founder structures create a destabilising “middle layer” and argues that a solo founder with a strong founding team yields better economic and relational dynamics. The Solo Founders Program, a small‑cohort residency within ODF, is described: 6‑7 participants per batch, weekly group office hours, and ongoing support after graduation. Success stories include a solo founder entering a YC batch and another reaching $1 M ARR in two months. The program also supports immigrant founders, helping with visas. Listeners are directed to the full report at solofounders.com/report and encouraged to follow the Solo Founders community on Twitter.

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