Declarative agents upgraded to GPT-5.1
Microsoft 365 Copilot declarative agents now use the GPT-5.1 model with automatic model selection for performance and reasoning.
Details:
What changed:
Declarative agents now run on GPT-5.1 using "auto" architecture, which selects the best model (fast or reasoning-optimized) based on the user's prompt. This improves speed and quality. Note that as the agent uses the "Think deeper" mode to generate higher quality responses, users will experience a slightly higher latency.
Why:
The upgrade ensures declarative agents provide more accurate and detailed responses.
Try this:
Use a declarative agent to process complex queries.
Test scenarios that require fast responses versus deeper reasoning.
Why this matters:
Business impact:
Supports higher-quality automation and decision-making.
Personal impact:
Provides users with faster and more accurate responses.