OpenAI and Anthropic May Drive Over 70% of Major Cloud AI Revenue

Analysts project OpenAI and Anthropic will generate over 70% of AI revenue for AWS, Google Cloud, and Azure by 2026-2027, raising concerns about data center investment concentration.

Woofun AI data shows that OpenAI and Anthropic are projected to account for more than 70% of AI-related revenue for Microsoft, Google, and Amazon. Barclays estimates 73% of AWS's 2026 AI revenue will originate from these two entities. UBS projects they will contribute approximately 28% of Google Cloud's revenue in 2026 and over 48% in 2027. Wells Fargo forecasts they will represent about 23% of Microsoft Azure's revenue in FY2026 and roughly 35% in FY2027.

The analysis highlights significant capital expenditure disparities. AWS's non-OpenAI/Anthropic AI revenue in 2026 is estimated at $8.5 billion against Amazon's $220 billion capex. Google's Vertex AI revenue is projected at $28.3 billion, while computing costs for the two AI labs exceed $35.6 billion. Microsoft's AI revenue stands at $34.5 billion versus $115.9 billion in capex. Market participants are questioning the sustainability of this demand and the transparency of customer concentration risks. The three cloud providers have not issued public responses.