Facebook and Instagram are dogfooding it in production for their namesake projects. I'd say it's about as "ready" as node.js was before io.js bumped its major.

Facebook and Instagram are dogfooding it in production for their namesake projects. I'd say it's about as "ready" as node.js was before io.js bumped its major. I've been using 0.13 in production for half a year with no problems.