Microsoft invests $1 billion in OpenAI
Microsoft invested $1B in OpenAI and became its exclusive cloud provider, months after OpenAI created a 'capped-profit' entity; the partnership later expanded with a multi-billion investment in January 2023.
Key facts
- Announced 22 July 2019
- Azure became OpenAI's exclusive cloud provider
- OpenAI LP (capped-profit) formed in March 2019
- Microsoft announced a further multiyear, multibillion-dollar investment in January 2023
What happened
The deal gave OpenAI the compute to train GPT-3 and GPT-4 on Azure supercomputers.
Why it matters
Set the template of Big Tech–frontier lab alliances funding ever-larger training runs.
Changelog
- 2026-09-29: created
Related events
- OpenAI founded as a non-profit AI research lab ★★★★
- GPT-3 (175B) shows in-context few-shot learning ★★★★★
- OpenAI completes restructuring into a public benefit corporation ★★★
Sources (2)
- officialMicrosoft invests in and partners with OpenAI (OpenAI)
- officialMicrosoft and OpenAI extend partnership (Microsoft, Jan 2023)
id: 2019-07-22-microsoft-invests-openai · updated 2026-09-29 · open in the interactive timeline