Unverified60% confidenceFactExact time
OpenAI moved toward closed source starting with GPT-3; prior to that, OpenAI operated as a nonprofit with openness as its goal, and after accepting hundreds of billions in investment from Microsoft, it converted to a for-profit entity.
2
Sources
60%
Confidence
Long-term
Relevance
7/6/2026
First Seen
Sources
Related Claims
VerifiedThe core team members of Anthropic are mostly former OpenAI executives and researchers who left OpenAI due to disagreements over GPT-3's commercialization path and OpenAI's transition from a non-profit to a capped-profit structure.78% similarVerifiedMusk was an early co-founder and major investor of OpenAI, and resigned from the board due to dissatisfaction with OpenAI's transition from nonprofit to for-profit status and its deep ties with Microsoft.76% similarVerifiedMicrosoft was once OpenAI's most important strategic partner and investor, and the Copilot product line had long been deeply dependent on OpenAI's model capabilities.73% similarVerifiedOpenAI's partnership with Microsoft began in 2019, when Microsoft first invested $1 billion in OpenAI.72% similarUnverifiedOpenAI subsequently closed the source of its core models, introduced a for-profit subsidiary structure, and restricted the disclosure of research results.71% similar
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