Azure OpenAI Service - 2025 Models and Features

Complete knowledge base for Azure OpenAI Service with latest 2025 models including GPT-5, GPT-4.1, reasoning models, and Azure AI Foundry integration.

Overview

Azure OpenAI Service provides REST API access to OpenAI's most powerful models with enterprise-grade security, compliance, and regional availability.

Latest Models (2025)

GPT-5 Series (GA August 2025)

Registration Required Models:

• gpt-5-pro: Highest capability, complex reasoning
• gpt-5: Balanced performance and cost
• gpt-5-codex: Optimized for code generation