Ritivel

Ritivel is a San Francisco, California-based enterprise software company that develops an artificial intelligence platform specifically designed for life sciences documentation and regulatory writing. The organization provides specialized AI agents that automate the drafting of complex clinical documents, including CTDs, CSRs, INDs, and BLAs, to help pharmaceutical companies accelerate the drug approval process. By streamlining these workflows, the technology aims to mitigate the estimated $45 million in lost monthly revenue associated with delayed market entries. The platform integrates directly with Microsoft Word, SharePoint, Veeva, and Outlook to automatically source clinical data and format submissions according to strict FDA compliance requirements for medical reviewers. Currently operating with a core team of three employees, the early-stage startup is backed by Y Combinator as part of its Winter 2026 batch and was founded by former engineers from Microsoft Research.