How to read this page. Each section starts Simple, then goes to a Deep dive: stop wherever you have what you need. The small numbers are sources: click one to open the original document. Where the maker has not published a figure -- a price, a die size, a factory address -- this page says so rather than estimate it.
1.At a glance
SimpleStart here
Maia 200, announced 26 January 2026, is Microsoft’s current AI chip, built specifically for inference — running already-trained models rather than training new ones 1 2. By June 2026 it was in production in Microsoft data centres near Des Moines, Iowa, and Phoenix, Arizona, running OpenAI’s GPT-5.2 models and Microsoft 365 Copilot 3 1.
Deep diveThe technical detail
Microsoft calls Maia 200 “the most performant, first-party silicon from any hyperscaler” and says it delivers “30% better performance per dollar than the latest generation hardware in our fleet today” 1. Like every Maia chip, it is not for sale or rent — Microsoft uses it only for its own services.
2.Launch and history
SimpleStart here
Maia 200 was late. Press reporting from June 2025, more than six months before launch, said the chip — then code-named Braga — had slipped at least six months into 2026, citing design changes including features OpenAI requested and staff turnover 4.
Deep diveThe technical detail
Microsoft says that despite the delay, Maia 200 went from first silicon to its first data-centre rack in “less than half that of comparable AI infrastructure programs” 1. By its fourth-quarter fiscal-2026 earnings call (July 2026), CEO Satya Nadella said the chip “continues to scale” and now supports both OpenAI’s and Microsoft’s own MAI models 5.
3.What’s inside it
SimpleStart here
Tuned for very small number formats (4-bit and 8-bit) that let it do more calculations per second on inference workloads, with 272 MB of fast on-chip memory 1.
Deep diveThe technical detail
Maia 200 links chips over standard Ethernet rather than a proprietary fabric: 2.8 TB/s of scale-up bandwidth per chip, four chips per tray joined by direct links, and a two-tier network supporting clusters of up to 6,144 chips 1. At Hot Chips 2026, Microsoft said the chip has no separate scale-out network at all: “it is all scale-up networking” 6.
4.Full spec table
SimpleStart here
| Spec | Microsoft Maia 200 |
|---|
| AI compute | Over 10 PFLOPS FP4; over 5 PFLOPS FP8 1 |
|---|
| Memory | 216 GB HBM3e 1 |
|---|
| Memory bandwidth | 7 TB/s 1 |
|---|
| On-chip memory | 272 MB 1 |
|---|
| Transistors | More than 140 billion 1 |
|---|
| Power | 750 W (SoC TDP) 1 |
|---|
| Process node | TSMC 3 nm 1 |
|---|
| Die size | About 820 mm², per press coverage of Microsoft’s Hot Chips 2026 talk 6 |
|---|
Deep diveThe technical detail
Against Maia 100 (see that page on this site): memory grew from 64 GB to 216 GB, memory bandwidth from 1.8 to 7 TB/s, and the process node moved from TSMC 5 nm to 3 nm 7 1. Press reporting names SK hynix as Maia 200’s sole HBM3e supplier; Microsoft itself does not name a memory supplier 8.
5.Where it’s made
SimpleStart here
Designed by Microsoft; manufactured by TSMC on its 3 nm process, its most advanced node yet for a Maia chip 1.
Deep diveThe technical detail
Microsoft does not name which TSMC factory makes Maia 200. At Hot Chips 2026, Microsoft reported measured figures for the chip including 1.65 petaflops of effective attention throughput and about 1.3 TB/s for a BF16 all-reduce operation 6.
6.Which systems use it
SimpleStart here
Running in Microsoft’s own Azure regions: US Central (near Des Moines, Iowa) and US West 3 (near Phoenix, Arizona), both confirmed in production by June 2026, with Italy, Australia and South Korea named as next 3 1.
Deep diveThe technical detail
Maia 200 uses a second-generation closed-loop liquid-cooling unit, an upgrade from the “sidekick” cabinet cooling used on Maia 100 (see that page on this site) 1. Microsoft has also opened a Maia 200 software development kit in preview, inviting developers, AI start-ups and academics outside the company to use it — no equivalent outside-developer preview was published for Maia 100 1.
7.Official pricing
SimpleStart here
Not for sale or rent. There is no Maia 200 virtual machine on Azure and no published chip price; Microsoft uses it only for its own services 1.
Deep diveThe technical detail
Press reported in May 2026 that Anthropic was in early talks to use Maia, which would make it the first outside company to run workloads on Microsoft’s own AI silicon; as of the check date neither company has confirmed a deal 9.
9.What came before, what came next
SimpleStart here
Came before: Maia 100, covered on its own page on this site.
Came after: nothing confirmed — press reports point to a possible Maia 300, but Microsoft had not announced it as of this page’s last check.
Deep diveThe technical detail
Maia 200 arrived more than two years after Maia 100’s November 2023 announcement. Press reporting from August 2026, citing The Information, said Microsoft was seeking TSMC capacity for more than 300,000 Maia 300 chips for 2027 delivery and could unveil the chip “as early as September” 2026 10. As of this page’s last check, no Microsoft announcement, blog post or filing confirming Maia 300 had been found, so it is treated here as unconfirmed, not shipped.
10.Hidden in plain sight
SimpleStart here
Maia 200 has no scale-out network at all — everything runs over the same scale-up Ethernet fabric, a design choice Microsoft called out explicitly at Hot Chips 2026 6.
Deep diveThe technical detail
Microsoft’s own performance-per-dollar claim (30% better than its existing fleet) is framed against Microsoft’s own hardware mix, not against a single named competing chip — a narrower and harder-to-verify comparison than the specific FP4-versus-Trainium3 and FP8-versus-TPU-v7 figures Microsoft publishes elsewhere in the same announcement 1.