August 8, 2025
5 min read
Microsoft Copilot Blog
Microsoft Copilot Studio now offers GPT-5, enabling smarter AI agents with real-time model routing and enhanced reasoning capabilities.
Available today: GPT-5 in Microsoft Copilot Studio
Microsoft Copilot Studio users now have access to GPT-5, OpenAI’s most advanced generative AI system. This release introduces the ability to select your agent’s model for generative answers and orchestration from a curated set optimized by Microsoft. Starting today, GPT-5 is integrated into Copilot Studio, allowing users to leverage the latest AI technology on day one. This integration also brings GPT-5 to Microsoft 365 Copilot, reflecting Microsoft's commitment to providing cutting-edge AI while maintaining enterprise-grade security and support.Real-time model routing with GPT-5
A unique feature of GPT-5 is its real-time router, which dynamically selects the best model for each task based on your instructions and prompts:- For simple or routine prompts, GPT-5 uses a high-throughput chat model optimized for speed and straightforward responses.
- For complex or open-ended tasks, GPT-5 employs a deep reasoning model that carefully plans, gathers context, and verifies its output for thorough and accurate responses.
- Sharper reasoning in ambiguous situations
- Improved coherence in multi-turn conversations
- Stronger adherence to instructions These improvements lead to more capable and reliable AI agents. Makers in early release cycle environments can now choose their agent’s model in the settings:
- GPT-5 Auto: Uses the real-time router to balance speed and depth by switching between the high-throughput and deep reasoning models.
- GPT-5 Reasoning: Prioritizes the deep reasoning model for complex scenarios.
- Longer context support
- Enhanced document understanding
- Faster, context-aware responses (high-throughput model)
- Accurate multi-step logic for complex tasks (deep reasoning model)
- Agent-specific fine tuning
- Global GPU infrastructure management
- Easy upgrades to new models
- Support for bringing your own fine-tuned models via Azure AI Foundry Models Full availability across all environments is expected later this month. Learn more about early release cycle environments and agent model selection. For additional details, see GPT-5 in Microsoft 365 Copilot. Try Copilot Studio
- What’s new in Copilot Studio: July 2025
- Publish your Microsoft Copilot Studio agents to Microsoft 365 Copilot
- AI Agents Are Broken: Can GPT-5 Fix Them?
GPT-5 enhances agent orchestration and reasoning
The orchestration model governs how an agent interprets instructions, plans actions, uses tools, and generates responses. With GPT-5, agents in Copilot Studio exhibit:
Powering agent tools with GPT-5
Tools are essential for agents to handle business processes effectively. Custom prompts, a flexible tool in Copilot Studio, allow makers to instruct AI models to complete subtasks such as formatting documents or extracting data. Now, makers can select GPT-5’s high-throughput or deep reasoning models for custom prompt tools, benefiting from:
Get started with GPT-5 in Copilot Studio today
GPT-5 in Copilot Studio is available now as an experimental AI system for agents built in early release environments, enabling makers to test and upgrade agents with the latest AI capabilities. The platform also offers:Microsoft Copilot Studio is an intuitive, secure, enterprise-ready SaaS platform that enables users to build AI agents using natural language. Integrated with Microsoft’s ecosystem and external data vendors, Copilot Studio accelerates agent development to multiply capacity, reduce costs, and improve customer satisfaction.