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Co-founded the AI startup Thinking Machines Lab alongside former OpenAI CTO, Mira Murati.

Meta reportedly attempted to acquire Thinking Machines Lab and then hire Tulloch directly, with a disputed compensation package valued up to $1.5 billion.

Announced his departure from the AI startup he co-founded, citing personal reasons for the move.

Rejoined Meta as an AI/ML engineer, a move seen as part of Meta's aggressive push to secure top-tier AI talent.