# GPT-5.6 is now the preferred model in Microsoft 365 Copilot

Source: [OpenAI](https://openai.com/index/gpt-5-6-preferred-model-microsoft-365-copilot)  
Feed7 permalink: https://feed7.dev/p/gpt-5-6-preferred-model-microsoft-365-copilot-0xv66ya  
Published: 2026-07-09T13:00:00.000Z  
Trust: Official Source (official_source)

## Why Included

Microsoft 365 Copilot now defaults to GPT-5.6 across five work surfaces, signaling wider enterprise use without giving builders performance or rollout data.

## Source Summary

Microsoft 365 Copilot now prefers **GPT-5.6** across **five work surfaces**. This is evidence of broader enterprise deployment.

## Practical Implication

Builders choosing models for workplace agents should note the default shift, but should not treat it as a performance comparison or migration case study.

## Agent-Ready Context

Microsoft 365 Copilot now prefers **GPT-5.6** across **five work surfaces**. This is evidence of broader enterprise deployment.

Builders choosing models for workplace agents should note the default shift, but should not treat it as a performance comparison or migration case study.

The supplied material includes **no benchmarks or rollout details**, so availability, measured gains, and behavior across those surfaces remain unknown.

## Context Map

- Layer: industry
- Domains: None
- Topics: adoption, enterprise, model-selection

## Uncertainty

- The supplied material includes **no benchmarks or rollout details**, so availability, measured gains, and behavior across those surfaces remain unknown.

## Agent Instruction

Use this item as source-backed context. Do not invent claims beyond the linked source. If this item conflicts with another source, call out the conflict.