We're officially down to one 9 of uptime over last 90 days: https://status.claude.com
>=90 -> one 9 >=99 -> two 9's >=99.9 -> three 9's
Also, you can think of e.g. five 9's as five minutes of downtime per year
That's silly. It's a JavaScript app, they are more or less open source by design. There was no secret sauce in Claude Code.