# Azure OpenAI Service (Openaimicrosoft Azure)
> Azure OpenAI Service is a collaborative cloud offering that provides enterprise customers with REST API access to OpenAI's powerful language models, including the GPT-4 and GPT-3.5 series. It combines OpenAI's AI research with the security, compliance, and regional availability of the Microsoft Azure platform.
- URL: https://optimly.ai/brand/openaimicrosoft-azure
- Slug: openaimicrosoft-azure
- BAI Score: 92/100
- Archetype: Challenger
- Category: Cloud Computing / Artificial Intelligence
- Last Analyzed: April 11, 2026
- Part of: Microsoft (https://optimly.ai/brand/microsoft)
## Competitors
- Amazon Bedrock Aws (https://optimly.ai/brand/amazon-bedrock-aws)
- Google Cloud Vertex AI (https://optimly.ai/brand/google-cloud-vertex-ai)
- OpenAI Direct API (https://optimly.ai/brand/openai-direct-api)
## Sub-brands
- Microsoft Azure (https://optimly.ai/brand/microsoft-azure)