Anyone know how they pick who to invite off the waitlist for GPT 4? I've been on there for a while. My project is open source and I wonder if that is getting me deprioritized.

You can get GPT 4 access by submitting an eval if gets merged (https://github.com/openai/evals). Here's the one that got me access[1]

Although from the blog post it looks like they're planning to open up to everyone soon, so that may happen before you get through the evals backlog.

1: https://github.com/openai/evals/pull/778