Simlayer
Simlayer co-founders raise $42M Series A for digital-world gyms that break agents before production does
Co-founded by Lin Mei and Owen Briggs, Simlayer builds fail-first sim environments where multi-agent stacks are red-teamed against tool abuse, long-horizon drift, and policy violations.
Lin Mei & Owen Briggs · ex-Meta AI / ex-DeepMind
“If it only works in a demo, it is not an agent. It is a press release with a UI.”
“Eval is consolidating into a control plane — Simlayer is shipping the gym enterprises will standardize on.”