Microsoft Developer
@msdev
Catch up on all the news from @GitHub Universe
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It’s time to make SHIFT happen. 🕹️
The theme for GitHub Game Off 2026 is SHIFT.
Shift gears. Shift perspectives. Shift reality. Or make a game controlled by the Shift keys. Your call.
You’ve got November to make something weird and wonderful.
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GitHub Universe Day 2 Keynote
This is one of the most interesting reveals today: Copilot Fusion on GitHub Copilot.
It offers roughly the intelligence of Opus 5.5 at 50% less cost. A truly impressive achievement. Kudos @github
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The @github engineering team built a best-in-class, truly multi-model harness, which we've implemented across Microsoft products.
Introducing Microsoft Copilot harness in Foundry Agent Service, a simpler way to build agents without rebuilding the execution layer.
It handles orchestration, tools, context, and controls so you can focus on your agent’s skills and outcomes.
Watch @jeffhollan's demo to see it in action.
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Frontier performance at a fraction of the cost.
In the @ArtificialAnlys Coding Agent Index, Copilot Fusion Max scored within two points of Claude Code with Opus 5.5 Max at about half the API cost per task.
Get 30% off through Nov. 30. Try it now. ⬇️
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Last week in Cologne I showed how you can use the GitHub Copilot App and Foundry to build an agent you can deploy across Teams, Outlook or an app of your choice.
I also showed how you can integrate our new Decision 1 model for intent classification. I'm interested in agents that can recognise intent and then take action independetly if they decide they can be helpful, so this was fun to show!
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GPT-6.1 Terra from @OpenAIDevs is now available in GitHub Copilot and Microsoft Foundry.
It's designed for everyday agentic coding and terminal work, with focused execution on well-scoped tasks at a lower cost than GPT-6.1 Sol.
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Generating code is getting easier. Knowing whether to trust it is the hard part.
Microsoft engineers share how they combine agents, testing, and formal verification to validate changes across massive codebases, including C/C++ to Rust migrations.
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1.2B users. ~40 regions. Single-digit-millisecond latency. One team.
@AzureCosmosDB and @OpenAIDevs engineers scaled it together. Read the story 👇
We serve data in milliseconds to more than 1.2 billion users across 40 geographic regions.
To reach that scale, we worked closely with @AzureCosmosDB on our storage architecture, achieving a 12x improvement in global median read latency.
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You built it. Now put it in play.
It’s not too late to submit your Inside the Game: Developer Hackathon project by Oct. 27 for the opportunity to have your work recognized and showcased.
Finish your submission:
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AI agents are writing more code. How can developers ensure that code is correct?
Microsoft Research’s Proof-Driven Development (PDD) Kit explores a more rigorous approach: it translates a developer’s intent into a formal specification, then uses formal verification to prove that generated code meets it.
PDD Kit works with Verus for Rust and is integrated with @GitHubNext’s Chopin, bringing formal methods into an AI-assisted development workflow for teams.
See the work in action at @github Universe, Oct. 28–29, 2026.
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The GitHub Copilot app Settings I Change Before Anything Else!
#GitHubUniverse# kicks off next week, October 28–29.
Grab your pass to join us in person or sign up to tune in virtually.
➡️
Today, we announced the next step in the Project HydraFusion vision: local models and intelligent routing for GitHub Copilot on Windows.
@cinnamon_msft shows what this can mean for your everyday coding workflows.
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Something new is coming from Windows
Our team spent 10 years teaching machines to read documents.
LLMs improved language understanding, but reliable document extraction still depends on the system around the model.
Here’s what we learned building Azure Content Understanding 🧵
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GPT-6.1 Sol from OpenAI is now available in GitHub Copilot and Microsoft Foundry.
In early testing, it completed tasks with fewer tokens and steps than earlier models in the GPT-6 and GPT-5.6 families, making it more affordable to build and run agents at scale.
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When an agent’s guardrail says “deny,” the action needs to stop.
Agent Hooks gives builders a shared control contract and conformance tests to verify enforcement across frameworks. Explore the spec, five SDKs, and no-key demos.
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Claude Opus 5.5, Anthropic’s newest Opus model, is now available in GitHub Copilot and Microsoft Foundry.
In early testing, Opus 5.5 resolved tasks comparably to Claude Opus 5 while using significantly fewer steps and tokens.
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Build agentic apps with the GitHub Copilot SDK, without implementing the agent loop yourself.
Join this beginner-friendly livestream to learn how to use sessions, tools, MCP servers, streaming events, and more to embed Copilot’s agent runtime in your apps. Plus, check out specific sessions for .NET and Java development.
No prior SDK experience required. Register for English, Chinese, Portuguese, Spanish, Japanese, or Korean 👇
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