Microsoft invests $1B in OpenAI
Microsoft invests $1B in OpenAI is an investment announced 2019-07-22, valued at $1.0B, currently completed. Microsoft's initial $1B investment made Azure OpenAI's exclusive cloud.
Deal record from the wafergraph deals corpus · every field traces to the sources listed below · page data as of 2026-09-05
- Type
- investment
- Announced
- 2019-07-22
- Status
- completed
- Value
- $1.0B
- Parties
- Microsoft (investor), OpenAI (investee)
- Source confidence
- high
The companies involved
Microsoft
Designs Maia AI accelerators and Cobalt server CPUs for Azure. niche in Custom Silicon Designers, headquartered in United States, market cap $3.71T. 80 tracked suppliers, 12 tracked customers · supply-chain risk
OpenAI
Leading AI lab (ChatGPT); designing custom inference silicon with Broadcom. leader in AI Labs / Model Builders, headquartered in United States. 11 tracked suppliers, 2 tracked customers · supply-chain risk
Related deals
- Microsoft expands OpenAI investment (~$10B) — $10.0B · 2023-01-23
- Microsoft–CoreWeave GPU cloud deal — $10.0B · 2023-06-01
- OpenAI–CoreWeave $11.9B infrastructure deal — $11.9B · 2025-03-10
- OpenAI–Oracle $300B cloud deal — $300.0B · 2025-09-10
- Stargate Project launched — $500.0B · 2025-01-21
- NVIDIA invests up to $100B in OpenAI — $100.0B · 2025-09-22
- OpenAI–AMD 6GW GPU deal + warrant · 2025-10-06
- OpenAI–Broadcom 10GW custom-chip deal — $10.0B · 2025-10-13
Sources
Cite as: wafergraph, “Microsoft invests $1B in OpenAI”, https://wafergraph.com/deal/msft_openai_1b/ (data as of 2026-09-05).
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