What does Paper Instruments do?
Paper Instruments, formerly The LLM Data Company, post-trains language models and builds open-source frontier models, agents, and evaluation infrastructure for knowledge-intensive professional work. The San Francisco startup, founded in 2025 by Daanish Khazi, Gavin Bains, and Joseph Besgen, is backed by Y Combinator (S25), Lightspeed Venture Partners, and True Ventures.