Adoption tracker

Companies using Microsoft

A curated, source-cited list of companies running Microsoft in production. Every row cites a real source and carries an honest status so a rumor is never shown as a confirmed move. See all vendors on the full tracker →

Statuses: confirmed official source reported credible third-party, not officially confirmed testing evaluating, not deployed. Last updated 2026-07-07.

Company	Model	Vendor	Status	Source	Noted
Microsoft Bloomberg: Microsoft replacing OpenAI/Anthropic models with in-house MAI models in Excel and Outlook to cut inference spend; a tuned MAI variant claims GPT-5.4 parity at up to 10x efficiency. Proprietary (not open-weight), but the same frontier-API cost pressure.	MAI	Microsoft	reported	News report	2026-07-07

Curated and source-cited - not an automated scraper. Missing a company, or have a correction? tell us.