Updates released between December 10, 2025, and December 23, 2025.

December 23, 2025

Updates released between December 10, 2025, and December 23, 2025.

Microsoft 365 Copilot app
GPT-5 powers Copilot Chat by default [Android, Windows, iOS, Mac, Web]

Copilot Chat delivers faster, smarter results using GPT-5 as the default model.

Details:
What Changed: All Copilot Chat experiences run on GPT-5 by default. Copilot automatically routes prompts to the best-performing models for each task, using fast models for basic tasks and specialized reasoning models for multi-step requests.

Why: Users want speed, accuracy, and minimal friction. This update helps to ensure consistent, high-quality AI interactions in Copilot Chat.

Try This:
“Get me up to speed on the latest plans related to [project/initiative]. Help me think through what to do next.”
“Use the attached spreadsheet with customer feedback to create a polished executive report that helps upper management decide where to prioritize resources in our next cycle.”
Why this matters:

Business Impact: Increases accuracy and productivity, helping teams make strong decisions and complete complex work faster.

Personal Impact: Removes friction by letting Copilot choose the best model--fast or reasoning--for the prompt.

Microsoft 365 Copilot Chat
Streamlined Copilot chat navigation with expanded history [Windows, Web]

A redesigned navigation pane provides a cleaner layout and expanded chat history, making it easier to switch between conversations. This allows you to switch between conversations and pick up where you left off, perfect great for fast-paced projects and multitasking.

Roadmap ID: 516570

Details:
What Changed: The Copilot navigation pane highlights key agents, removes clutter, and expands visible chat history beyond the previous limit of five recent chats. Chat search is also more prominent for faster access to specific threads. This reduces interface clutter.

Why: Users wanted an interface that feels organized and speeds up workflow. This redesign lets you quickly return to prior conversations without digging through menus.

Try This:
Open the navigation pane in Copilot to see the improved design.
Search for a previous project conversation using the updated chat search bar.
Pin your most important chats to keep them accessible during critical work sessions.
Why this matters:

Business Impact: Standard, simplified navigation UI to help reduce downtime from searching old threads.

Personal Impact: Enjoy a simpler, less cluttered workspace with easier access to past chats.

Microsoft 365 Copilot extensibility
Access IT service documentation with Freshservice integration [Web]

Let Copilot retrieve IT documentation and troubleshooting instructions directly from Freshservice with this integration.

Roadmap ID: 513280

Details:

What Changed: Freshservice connector gives access to IT procedures and knowledge articles

Why: IT teams and employees often struggle with finding the right documentation. With Copilot pulling service details in real time, response times and productivity benefit.

Try This:

Connect Freshservice in Copilot settings.
Ask Copilot, “What’s the procedure for resetting passwords from Freshservice?”
Insert a troubleshooting guide directly into a Teams post for your team.
Why this matters:

Business Impact: Faster issue resolution reduces downtime and keeps employees productive.

Personal Impact: Remove frustration, solve issues, and prevent delays caused by searching for documentation.

Additional resources:

Learn:

Freshservice Microsoft 365 Copilot connector overview
Upload Larger Files in Copilot Studio Agent Builder [Android, Windows, iOS, Web]
Agent Builder now supports file uploads up to 512 MB when creating agents, ideal for larger files.

Roadmap ID: 500375

Details:
What Changed: This increases the upload size limit in Agent Builder to 512 MB, enabling use of larger files as grounding data.

Why: Users requested more flexibility for grounding agents. Larger files improve reduce the need to split or compress documents.

Try This:
Drag and drop large documents such as training manuals into your agent project.
Create the agent and ask it to summarize information from uploaded files.
Why this matters:

Business Impact: Allows enterprises to build agents with richer, domain-specific knowledge.

Personal Impact: Complete your work without the need to split files or compress data.

Additional resources:
Learn:

Embedded file content
Use .NET client libraries to integrate Microsoft 365 Copilot APIs [Web]
Offers official .NET SDKs for integrating with Microsoft 365 Copilot APIs.

Details:
What changed: Released a .NET SDK for Copilot API calls, making integration easier.
Why: Meets enterprise developers’ need for secure .NET integration options.

Try This:

• Install NuGet package
• Authenticate and initiate Copilot prompt calls
• Process responses in your .NET app

Why this matters:

Business Impact: Improves developer productivity and project speed.
Personal Impact: Gives .NET teams direct hooks into Copilot capabilities.

Additional Resources:
Learn:

Microsoft 365 Copilot APIs client libraries
Use Python client libraries to integrate Microsoft 365 Copilot APIs [Web]
Adds official Python libraries for secure integration with Microsoft 365 Copilot APIs.

Details:
What changed: Developers can now leverage Microsoft 365 Copilot APIs using Python SDKs.

Why: Opens opportunities for AI workflows in Python-based applications.

Try This:

• Install Python SDK
• Authenticate using OAuth
• Send prompts and parse results

Why this matters:
Business Impact: Expands Copilot customization for enterprise developers.
Personal Impact: Python devs gain first-class access to Copilot APIs.

Additional Resources:
Learn:

Microsoft 365 Copilot APIs client libraries
Use TypeScript client libraries to integrate Microsoft 365 Copilot APIs [Web]
Build custom integrations with Microsoft 365 Copilot APIs using official TypeScript SDK libraries.

Roadmap ID: 501574

Details:
What changed: Official TypeScript SDK released for Copilot API integration in web apps.
Why: Standardizes developer integration with Microsoft 365 Copilot features.

Try This:

• Install SDK via npm
• Authenticate using Microsoft Identity
• Test API calls for Copilot prompts

Why this matters:
Business Impact: Enables custom enterprise apps with AI-powered features.
Personal Impact: Developers have a secure, documented method for advanced builds.

Additional Resources:

Learn:
Microsoft 365 Copilot APIs client libraries

- View and Manage SharePoint Agents with Greater Control [Web]
Admins can now see all SharePoint agents in a single unified view and manage them more intuitively with a streamlined delete action.

Details:
What Changed: The enhanced Copilot Control System UI introduces a centralized SharePoint agent inventory and replaces the previous block/unblock workflow with a clear, simplified delete option.

Why: Admins requested more transparent oversight of deployed agents, and this update delivers easier tracking, review, and lifecycle management.

Try This:

• Go to Agents and Connectors in the Copilot Control System.
• Review all existing SharePoint agents and delete those that are outdated, unused, or no longer compliant.

Why this matters:
Business Impact: Strengthens governance and operational hygiene by reducing risk from stale or misconfigured agents.
Personal Impact: Saves time with straightforward, intuitive controls instead of complex, multi-step administration.

Microsoft 365 Copilot Studio
Build Copilot agents using organizational People data [Windows, Web]

Developers can build agents in Copilot Studio that deliver personalized, context-aware responses using organizational People data.

Details:
What changed: Added the ability for agent builders to access and use People data from your directory in responses.
Why: Makes interactions more contextual and human-centric for better relevance.

Try This:

• Enable People data in Agent Builder
• Create an agent to answer org-specific directory questions
• Test in Microsoft Teams

Why this matters:
Business Impact: Improves accuracy and personalization in enterprise workflows.
Personal Impact: Users get tailored answers courtesy of context-rich data.

PowerPoint

• Use your organization’s approved assets in Copilot presentations [Mac, Windows, Web]

Create branded PowerPoint slides by pulling images and templates from your company’s SharePoint asset library or Templafy integration.

Roadmap ID: 496366

Details:
What changed: PowerPoint Copilot integrates with SharePoint Organization Asset Library and Templafy for approved, compliant visuals.
Why: Ensures quality designs aligned with corporate branding guidelines.

Try This:

• Configure SharePoint OAL or Templafy in Microsoft 365
• Ask Copilot: “Create a marketing update deck using brand imagery.”

Why this matters:
Business Impact: Maintains brand identity across all content.
Personal Impact: Saves design time by eliminating manual asset searching.

Word
Referenced sources cited in drafted content [Windows]

Draft content with confidence as Copilot automatically includes citations, referencing the information in your text. This feature ensures accuracy and credibility, saving time on manual citation.

Roadmap ID: 380842

Details:

What changed: Copilot in Word now automatically generates citations when incorporating external information into your drafts. This process highlights references directly within the text, eliminating the need for manual citation entry.

Why: Proper attribution is vital for maintaining credibility and avoiding plagiarism. This enhancement simplifies the citation process, ensuring academic and professional integrity without added effort.

Try This:

• While drafting in Word, ask Copilot: "Include citations for referenced content."
• Use Copilot commands to review the generated citations for completeness and accuracy.
• Compare the citation style used with your preferred or required academic formatting.

Why this matters:
Business Impact: Enhances the reliability of professional documents by ensuring proper attribution without a complex citation process.

Personal Impact: Save time creating references, allowing more focus on content quality and creativity.