OpenAI's Ex-CTO Secures $2 Billion Seed Round for AI Startup at $10 Billion Valuation

Jun 20, 2025
TechCrunch
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Summary

Mira Murati, former OpenAI CTO who led development of ChatGPT and DALL-E, secures $2 billion seed round at $10 billion valuation for her new AI startup Thinking Machines Lab, backed by Andreessen Horowitz and Conviction Partners.

Key Points

  • Thinking Machines Lab, founded by OpenAI's former chief technology officer Mira Murati, closes on $2 billion seed round at $10 billion valuation
  • Andreessen Horowitz leads round with participation from Sarah Guo's Conviction Partners
  • Murati leaves OpenAI after leading development of ChatGPT, DALL-E, and voice mode, taking several former colleagues with her

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