Renowned investor claims GPT-5.6-Sol accidentally deleted almost all files on his Mac Renowned investor and former HyperWriteAI founder Matt Shumer posted that while testing OpenAI's invited Ultra mode, GPT-5.6-Sol accidentally deleted almost all files on his Mac. According to the execution logs he shared, a subagent responsible for code review mistakenly expanded the HOME path while executing a cleanup command, running the `rm -rf /Users/mattsdevbox` command. By the time he noticed and manually terminated the process, a large number of files had already been deleted. Matt Shumer stated that this incident "increased his trust in Fable by 1000 times" and that he is currently attempting to recover the data.