Caleb Peffer

Caleb Peffer is co-founder and CEO of Firecrawl, a YC-backed API that crawls websites and returns clean, LLM-ready markdown and structured data. With Eric Ciarla and Nicolas Silberstein Camara he builds data plumbing for agents and RAG apps that need the live web.

YC seed for web-to-LLM data

Firecrawl's public positioning is simple: give developers an API that handles crawling, JS rendering, and extraction so they do not rebuild scrapers for every AI feature. Peffer appears as CEO on the YC company page alongside his co-founders.

Builder adoption

Growth has been product-led among AI engineers wiring RAG and agent tools. Marketing emphasizes reliability and format cleanliness over enterprise suite packaging.

On data as the bottleneck

He frames the hard part of many AI apps as getting trustworthy web context into the model, not the model call itself. That data-path focus is why Firecrawl belongs on an early-founder watchlist even before an AIR review ships.