Garry Tan Ports Doom into Bel with Claude Opus 5.5 in 20 Minutes

During a dinner with Tom Brown, Tom Blomfield and Paul Graham, YC chief Garry Tan used Claude Opus 5.5 fast mode to port the 32k-line C++ Doom into Paul Graham's Bel dialect in about 20 minutes.

2026-10-07 ~ 2026-10-07 · 2 related posts

• Garry Tan ports Doom to Paul Graham's Bel LISP in 20 minutes using Opus 5.5 — garrytan · 2026-10-07

1 near-duplicate retellings: garrytan