Archive · 20 Aug 2026
Meta Quietly Emerges as Microsoft’s Major AI Customer
Meta is using Microsoft’s computers and AI models to help build its own technology.
It reportedly spends hundreds of millions of dollars each year for this access.
Meta also uses trillions of small AI-computing units called tokens every week.
Microsoft sells access to different AI models through a service called Foundry.
Many of Foundry’s biggest customers are technology companies rather than traditional businesses.
Meta uses outside models to help developers and test its own models.
Meta is also creating a service that could sell access to AI models.
That service might eventually reduce Meta’s need for Microsoft’s services.
Meta reportedly spends hundreds of millions of dollars annually accessing AI models through Microsoft Azure.
Meta uses trillions of AI-computing tokens each week through Microsoft’s platform, according to a source.
Microsoft Foundry had 100,000 customers as of July, but its biggest customers are largely technology companies.
ByteDance is generally Foundry’s biggest spender, with Adobe, Perplexity and Sierra also identified as major customers.
Meta uses external models while developing its own and is building an API service that could compete with Foundry.
- Who
- Meta Platforms, Inc. and Microsoft Corporation are the main companies involved; ByteDance, Adobe, Perplexity and Sierra are also named as major Foundry customers.
- What
- Meta reportedly became one of Microsoft’s largest AI customers, spending hundreds of millions of dollars annually on model access through Azure.
- When
- The report describes the companies’ current relationship; Foundry had 100,000 customers as of July. Meta previously stopped using Bing for Facebook searches by late 2014.
- Where
- The activity occurs through Microsoft Azure and the Microsoft Foundry marketplace.
- Why
- Meta uses external AI models for software development and to evaluate its own models while continuing to develop its own AI systems.
Concerns and Risks
Business and Development Rationale
Concentration of AI demand
Concerns and Risks
The report raises concerns that AI revenue and usage remain concentrated among sophisticated technology companies, creating dependence on a small group of customers.
Business and Development Rationale
Microsoft’s marketplace had 100,000 customers, and the company promotes use by industries such as manufacturing and transportation, even though its largest customers are currently technology firms.
Meta’s reliance on external models
Concerns and Risks
Meta’s substantial spending on external models could increase its dependence on Microsoft and other providers.
Business and Development Rationale
Meta uses multiple platforms based on availability and cost, while also developing its own models and using outside systems to assess their performance.
Potential competition with Microsoft
Concerns and Risks
Meta’s planned API service could compete with Microsoft Foundry and reduce Meta’s purchases from Microsoft.
Business and Development Rationale
The planned service would let Meta sell access to various AI models, potentially giving it another business while it continues using external services during development.
- Reported annual spending
- Meta reportedly spends hundreds of millions of dollars each year accessing AI models through Microsoft Azure.
- Weekly usage
- Meta uses trillions of AI-computing tokens each week through Microsoft’s platform, according to a person familiar with the matter.
- Foundry customers
- Microsoft Foundry had 100,000 customers as of July.
- Largest Foundry spender
- ByteDance has generally been Foundry’s biggest spender, according to the report.
- Other major customers
- Adobe, Perplexity and Sierra were identified as other significant Foundry customers.
- Microsoft AI revenue concentration
- OpenAI provided about 70% of Microsoft’s overall AI revenue in its most recent fiscal year.
- Meta’s planned service
- Meta is building an API service to sell access to various AI models, potentially competing with Foundry.
