Karina Nguyen is an angel investor and the founder of Thoughtful, working on AI research and model behavior. She previously worked on post-training and products at OpenAI and Anthropic.

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Karina Nguyen is an angel investor and the founder of Thoughtful, working on AI research and model behavior. She previously worked on post-training and products at OpenAI and Anthropic.

Career

Founder at Thoughtful until Present
semaphore.substack.com

Things I learned at OpenAI

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