How Jane Street builds LLM dev tools for OCaml: custom models, training data and AIDE (John Crepezzi)

John Crepezzi

Talks worth your time · AI in business · 2026-10-09 · 17 min · 11 pages

Instead of watching another Netflix series tonight, watch this 16-minute talk from a Jane Street AI engineer explaining how the hedge fund uses LLMs to make $30B+ every year. It’s the clearest, most practical look I’ve seen at how a top quant firm actually builds custom LLMs and https://t.co/og8zRs8U2m

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