It depends on what "us" means. I am switched off of Claude almost entirely now except for background things where I want to abuse my subsidized account. Otherwise, OpenRouter + open weight models are my daily drivers. It takes a bunch of work but I'm doing it for roughly a max20 account cost, a bit more, but it's not like the difference is huge. They are less capable but I've modified my workflow to mitigate that as much as possible, and I can still do things when Anthropic goes down.

As temporary backup, one can use claude models hosted on GCP - my understanding is that those don't depend on platform.claude.com and should be available even if main claude platform is dead