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Mira Murati Launches $12B AI Startup, Tinker Unveiled

10/6/2025

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Summary

Story summary

Mira Murati, former CTO of OpenAI, launched Thinking Machines Lab and unveiled Tinker, an Artificial Intelligence (AI) customization tool.
Tinker streamlines fine-tuning, giving researchers access to capabilities.
Seed funding of $2 billion valued the startup at $12 billion, drawing talent from major tech firms.
Murati resisted Meta's recruitment offers, signaling loyalty to the mission and responsible AI development and regulation.

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Story summary

Mira Murati, former CTO of OpenAI, launched Thinking Machines Lab and unveiled Tinker, an Artificial Intelligence (AI) customization tool.
Tinker streamlines fine-tuning, giving researchers access to capabilities.
Seed funding of $2 billion valued the startup at $12 billion, drawing talent from major tech firms.
Murati resisted Meta's recruitment offers, signaling loyalty to the mission and responsible AI development and regulation.