Microsoft / Azure OpenAI
infrastructureUS · Founded 1975
OpenAI's enterprise distributor. $13B invested; deploys GPT and Claude via Azure.
Microsoft's partnership with OpenAI gives it exclusive rights to deploy OpenAI models in Azure, giving enterprise customers access to GPT-4o, GPT-5, and the o-series through their existing cloud relationship. Microsoft also distributes Anthropic's Claude and Meta's Llama through Azure AI Foundry, making it the primary enterprise distribution layer for frontier models.
Main models
- GPT-4o (via Azure)
- GPT-5 (via Azure)
- Claude (via Azure AI Foundry)
Strengths
- Enterprise compliance
- Azure integration
- Multi-model access
- SLAs
Pricing
Azure pricing: similar to direct API with enterprise compliance controls