BusinessAug 6, 2026, 5:35 PM

Microsoft's AI revenue reportedly depends on OpenAI for 70 percent

30-second summary

Microsoft earned $24.1 billion from AI services linked to OpenAI in its last fiscal year, accounting for 70% of its total AI revenue.

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Microsoft's AI revenue reportedly depends on OpenAI for 70 percent
Key takeaways
  • Microsoft earned $24.1 billion from AI revenue tied to OpenAI in the last fiscal year.
  • This revenue accounts for 70% of Microsoft's total AI business.
  • The heavy reliance may explain Microsoft's recent advocacy for open-weight models.
  • The shift contrasts with Microsoft's past emphasis on proprietary solutions.
Full story

A Bloomberg analysis shows Microsoft generated $24.1 billion in AI-related revenue through its partnership with OpenAI during the fiscal year ending June 2024. This figure represents 70% of Microsoft's total AI business, highlighting a significant financial reliance on OpenAI's models and services. The dependency underscores why Microsoft has recently shifted its stance on open-weight models, advocating for greater openness despite its historical reputation for vendor lock-in. The move suggests a strategic pivot to reduce long-term risks while maintaining competitive advantage in the AI market.

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Why this matters
Developers

Developers may see Microsoft's push for open models as a strategic move to reduce dependency on single providers.

Businesses

Companies relying on Microsoft's AI services face potential risks due to the high revenue concentration with OpenAI.

Investors

Investors should consider the financial exposure of Microsoft's AI revenue to OpenAI's performance and stability.

Glossary
open-weight models
AI models whose weights and architecture are publicly accessible, allowing for customization and self-hosting.
vendor lock-in
A situation where a customer becomes dependent on a single provider for products or services, making it difficult to switch.
Sources · 1
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