E2B

“Docker said, themselves said containers aren't safe. You better put in a sandbox. And that's why they've had a huge success with Docker sandboxes.”

“If you look at E2B and you look at Docker, they're probably the two best at understanding all that stuff. So you start there because if you don't get the sandbox right, forget everything else.”

“The provider decision matrix across E2B, Modal, Daytona, Cloudflare, Fly.io, and LangSmith Sandboxes, with the price-per-1,000-runs math so you pick once and never re-platform.”