Solo-Founded Startups Reach 36 Percent of New Ventures

Solo-founded startups reached 36.3% of all new ventures by mid-2025, according to data from Cartagena. This growth is driven by a cost inversion where AI agent stacks handle code generation, content production, and customer support, allowing individuals to manage workloads that previously required four to six employees.

Dario Amodei, CEO of Anthropic, predicts the emergence of a billion-dollar one-person company by 2026, specifically within developer tools and proprietary trading. This sentiment is echoed by other tech leaders, including OpenAI CEO Sam Altman, who noted a betting pool among CEOs regarding when the first billion-dollar solo company will appear. Y Combinator has similarly prioritized tools that increase leverage for solo founders.

Concrete examples of this trend include Maor Shlomo, who solo-founded the AI app builder Base44 and later sold it to Wix.com for $80 million in cash. Despite these successes, the solo-founder model faces challenges in enterprise sales, compute scaling costs, and regulated sectors like defense and healthcare. While angel investors are increasingly supportive, traditional venture capital funds still generally prefer multi-founder teams to ensure execution capacity.