Just last week, Musk warned of a tightening AI funding environment, and now even ChatGPT's OpenAI is struggling. The Financial Times reports that ChatGPT's OpenAI has reduced its latest funding round by one-third, and its valuation has dropped from $1.4 trillion to $1.25 trillion. The reason is that some potential investors have proactively reduced their subscription amounts, and even the first round of funding could not be fully completed.