Most $1B AI Unicorns Skip Publishing, Raising Transparency Concerns
New bioRxiv preprint finds >50% of AI unicorns (valued >$1B) have never authored a paper or preprint, contributing to just 0.1% of AI papers in 2025. This gap hampers validation, reproducibility, and assessment of social impacts, while firms like OpenAI dominate citations. The study highlights the tension between commercial incentives and scientific norms.