Google, Microsoft and 3 Rivals Hold 71% of World AI Compute

What Was Posted on X

The poster’s X post of 2 November 2026, which says five companies own 71% of the world’s compute; the argument is the poster’s opinion.

Amazon, Google, Meta, Microsoft and Oracle held an estimated 71% of the world’s AI compute at the end of 2025, measured in H100-equivalents, up from 63% in the first quarter of 2024, Epoch AI data show.

Google alone held 24.8%, more than Microsoft’s 16.8% and Oracle’s 5.6% combined, by our arithmetic from Epoch’s table. Everyone else in the world shared the remaining 29.3%.

The key insight: Five companies, Amazon, Google, Meta, Microsoft and Oracle, held an estimated 71% of the world’s AI compute at the end of 2025, up from 63% in early 2024, and Google alone held 24.8%, Epoch AI estimates.

What the Epoch Data Show

Epoch, a research group that tracks AI chips, estimates each company’s share of cumulative global AI compute every quarter. At the end of 2025, Google held 24.8%, Microsoft 16.8%, Amazon 12.1%, Meta 11.3% and Oracle 5.6%, according to Epoch.

The five held about 1.5 million H100-equivalents in the first quarter of 2024 and about 14 million by the fourth quarter of 2025, Epoch’s table shows. That is roughly nine times as much in seven quarters, by our arithmetic. Google’s holdings went from about 500,000 to about 5 million, ten times as much.

Microsoft’s share slipped from 18.9% to 16.8% over the period, even as its holdings rose from about 450,000 to about 3.4 million H100-equivalents, the table shows. Amazon’s share rose from 8.4% to 12.1%.

The combined share stopped rising in 2025: it was 71.1% in the second quarter, 71.3% in the third and 70.7% in the fourth, according to Epoch.

Share of global AI compute (H100-equivalents) held by Google, Microsoft, Amazon, Meta and Oracle, Q1 2024 to Q
Share of global AI compute (H100-equivalents) held by Google, Microsoft, Amazon, Meta and Oracle, Q1 2024 to Q4 2025, per Epoch AI (14 Apr 2026). Combined: 62.5% to 70.7%. The 29.3% rest-of-world share is our arithmetic.

How Epoch Measured It

The figures come from Epoch’s AI Chip Owners dataset, which covers chips made by Nvidia, Google, AMD, Huawei and Amazon, Epoch says. An H100-equivalent converts each chip by its highest 8-bit operations per second, so it does not perfectly reflect real-world performance across chip types, Epoch notes.

Epoch says its data does not capture all global chip ownership, and that first-quarter 2026 data was excluded because it was not yet finalised when it published the insight on 14 April. Many AI labs, including OpenAI and Anthropic, largely depend on these hyperscalers for research and inference compute, Epoch writes.

The Argument on X

On 2 November, Jessie Dong, whose X profile lists compute and AI, used the 71% figure to argue about who wins compute contracts. Dong wrote that “there are only a handful of buyers that truly change where compute money goes” and named Amazon, Google, Meta, Microsoft and Oracle.

When those five need more GPUs than they can build themselves, they rent from a short list of providers, Dong wrote: CoreWeave, Nebius, Nscale, IREN and Lambda. The post says smaller neoclouds claim similar quality but struggle to win customers at the same price, and that more transparency on quality would help them compete for large contracts.

Dong’s point is an opinion. The Epoch figure the post cites is an estimate of chips owned, not of contracts signed.

Connecting the Coverage

We have tracked the providers on the other side of these deals: the cash and debt at CoreWeave, Nebius, IREN and peers, Nebius spot prices for B300 hours and Anthropic’s compute commitments, which run through cloud providers. As we read it, the Epoch table is the denominator for all of them: what neoclouds and labs own is measured against a base where five companies hold 71%.

The Structural Read

As we read the table, the concentration grew while the market grew: the five’s holdings rose about ninefold in seven quarters by our arithmetic, and their combined share still edged up.

As we read it, the flat share in the second half of 2025 (71.1%, 71.3%, 70.7%) means everyone else, neoclouds and labs included, grew about as fast as the five over those quarters, which is the backdrop to Jessie Dong’s argument about who wins the large contracts.

Epoch AI, 14 April 2026

“Many AI labs (including OpenAI and Anthropic) largely depend on these hyperscalers for access to R&D and inference compute.”

Three Implications

FOR NEOCLOUDS Jessie Dong argues that more transparency on quality would let smaller providers compete for large contracts that, in Dong’s view, go to a short list today.

FOR AI LABS Epoch writes that many labs, including OpenAI and Anthropic, largely depend on the five hyperscalers for research and inference compute.

FOR READERS OF THE NUMBERS Epoch counts chips owned in H100-equivalents and says its data does not capture all global ownership; 2026 figures were not finalised when it published.

Business Pill · Neoclouds Explained

Business Pill: what a neocloud is and how it differs from a hyperscaler.

What Is Not Established

Epoch’s figure counts chips owned, not chips in use or capacity rented out, and it does not capture all global ownership, by Epoch’s own account. Epoch had not finalised data for 2026 when it published, so the shares for this year are not known. Dong’s list of five preferred providers is an opinion; we have not seen contract-level data that ranks them.

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The Bottom Line

Amazon, Google, Meta, Microsoft and Oracle held an estimated 71% of global AI compute at the end of 2025, up from 63% in early 2024, Epoch AI estimates, with Google alone at 24.8%.

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A note on sourcing. Shares and H100-equivalent counts are from Epoch AI’s data insight of 14 April 2026 and its quarterly table; the multiples, the 29.3% rest-of-world share and the Google versus Microsoft-plus-Oracle comparison are our arithmetic. Jessie Dong’s argument is from a post on X of 2 November 2026 and is an opinion.

Sources: Epoch AI, Five hyperscalers now own over two-thirds of global AI compute, 14 Apr 2026 · Jessie Dong on X, 2 Nov 2026

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