OpenAI just released a response to Musk's lawsuit.
One of the emails provided as evidence of their claims is Slate Star Codex's "Should AI be open?"
The emails show Musk forwarding him an email he received to Sam Altman and then Ilya replying that for a hard takeoff scenario, open sourcing could make it easier for a bad actor to reach AGI first and that the right strategy would be to share everything in the short and possibly medium term and that it would make sense to start being less open as they got closer to AGI.
https://openai.com/blog/openai-elon-musk#email-4
