Trevor O'Brien

copilot creation at @microsoft

[Microsoft Developer @msdev]

Today we’re launching Command Line, a new technical blog about how and why we build.

Our first stories go behind the architecture, design decisions, and research shaping the next wave of developer tools.

Stay tuned for more next week at #MicrosoftBuild https://t.co/JKbHGpz130

[Trevor O'Brien @tmobrien]

Here to help with your distribution and growth numbers, @AravSrinivas ❤️

[Aravind Srinivas @AravSrinivas]

Found a reason to finally use Teams

[Trevor O'Brien @tmobrien]

@ErnestWongBWM warms my heart! the team has been pouring themselves into this

[Trevor O'Brien @tmobrien]

Congratulations and welcome, @nicbstme!!!

[Nicolas Bustamante @nicbstme]

https://t.co/pQ9XUn04x0

[Trevor O'Brien @tmobrien]

Opus 4.7 — rolling out to Copilot in Excel today!

We'd love feedback from the @msexcel community as you try out this new model from @AnthropicAI

[Microsoft 365 @Microsoft365]

Today we’re expanding model choice in Microsoft 365 Copilot with the addition of Anthropic’s latest model—Claude Opus 4.7—in Copilot Cowork via the Frontier program, Copilot Studio early release cycle environments, and rolling out to Copilot in Excel.

Start exploring: https://t.co/h3yNQCWzfF

[Trevor O'Brien @tmobrien]

These Artemis posters from @Prof_Kalkyl are something special. Channeling a ray of light during a dark time.

[Oliver ೫ @oliverhamrin]

Full static grid. Personal favorites: 2 and 7.

A lot of you reached out about buying prints, but since this is NASA's intellectual property that would require an official collaboration.

[Trevor O'Brien @tmobrien]

@steveruizok @talkaboutdesign pretty sure projector was just a text rendering company for half of our existence. custom fonts in webgl was a very special circle of hell

[Trevor O'Brien @tmobrien]

@ltm but the spatial audio on your airpods

[Trevor O'Brien @tmobrien]

@teropa too real

[Trevor O'Brien @tmobrien]

@chrisfralic @stevewoz og hackers

[Trevor O'Brien @tmobrien]

@stevenstrogatz neat visual for prime factorization

[Тsфdiиg @tsoding]

You know what actually democratized Programming? Excel.

[Trevor O'Brien @tmobrien]

@matsonj even just having AI write sports data scrapers — so satisfying. i can't wait for the day i tell my son, "when i was kid, we used to parse html tables by hand!"

[Trevor O'Brien @tmobrien]

it's been super fun to see @Copilot and @msexcel showing up during NFL playoff games.

(not always as fun being surrounded by @Seahawks fans all day at work though!)

https://t.co/DqD1CLSkyO

[Trevor O'Brien @tmobrien]

@bnj @variantui i’d love to try, Ben

[Trevor O'Brien @tmobrien]

@dantemagg 🤔

[Trevor O'Brien @tmobrien]

@fredeil @msexcel noted

[Trevor O'Brien @tmobrien]

@goldstein_aa @OpenAI that was our very early preview that we used to validate and collect feedback

from that link: "An early preview of Agent Mode in Excel is available starting today"

[Trevor O'Brien @tmobrien]

📈 Today, we're launching Agent Mode in Excel on Windows and Mac. An Excel Copilot that can work with you and make edits in your spreadsheet like an expert collaborator.

We're also introducing a new, multi-model system that supports both GPT models from @OpenAI and Claude models from @AnthropicAI. Wanna try Claude Opus 4.5 natively in @msexcel? We've got you.

Give it a shot and let me know what you think.

[Trevor O'Brien @tmobrien]

@14Raul98 @OpenAI do you have Agent Mode selected from the tools menu? you've got to make that selection for the time being to have it take action

[Trevor O'Brien @tmobrien]

@cerealman1234 or feel free to DM me. if you could share operating system, whether you’re using Excel desktop or web, and a screenshot that would be useful to debug

[Trevor O'Brien @tmobrien]

Agent Mode in Excel is available and unlimited for all Copilot Premium customers.

Also available to all M365 Personal and Family customers on a credits based system. Available across the globe in multiple languages, coming soon to the EU and UK.

(Never used Ramp Sheets but I’m sure it’s sick 🤷🏻‍♂️)

[Dan Hightower @Danhightower]

"Look we saw Ramp Sheets, and honestly it was sick, so we reactively pulled this forward on our roadmap. We hope you* enjoy it.

*Agent Mode is generally available... for 365 copilot premium super duper plus customers in select markets within select regions of certain planets that may or may not be within this solar system."