Investors poured more than $40 billion into AI startups in the past six months, the data showed. That includes a $10 billion investment by Microsoft (MSFT.O) in OpenAI and $1.3 billion in funding for rival Inflection AI. "I haven't written any checks in the past 18 months," said Kevin Colleran, a co-founder at early-stage firm Slow Ventures. PitchBook said large investors weren't actively participating in venture funding and outsized deals that had pushed deal values to records were no longer happening. Venture capital funding globally hit an annual record of $745.1 billion in 2021.

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Persons: PitchBook, OpenAI's ChatGPT, Kevin Colleran, weren't, Mary D'Onofrio, Krystal Hu, Edwina Gibbs Organizations: Venture, Investors, Microsoft, Slow Ventures, Bessemer Venture Partners, Thomson Locations: OpenAI, America, U.S, Europe, New York