Biggest AI data centers and compute
The biggest AI data center we track is xAI (SpaceXAI)'s Colossus 2, at ~946 MW of current IT power per Epoch AI as of 15 Oct 2026. Below: every tracked site ranked, then planned capacity and capex where a lab discloses them. Compute is shown but not scored, because figures aren't comparable across labs.
| Rank | Lab | Current IT power | Site | As of | Source |
|---|---|---|---|---|---|
| 1 | xAI (SpaceXAI) | ~946 MW | Colossus 2, current IT power (est.), largest tracked | 15 Oct 2026 | Epoch AI (opens in new tab) |
| 2 | Anthropic | ~910 MW | Anthropic-Amazon New Carlisle, current IT power (est.) | 15 Oct 2026 | Epoch AI (opens in new tab) |
| 3 | Meta Superintelligence Labs | ~471 MW | Meta Prometheus, current IT power (est.) | 15 Oct 2026 | Epoch AI (opens in new tab) |
Each figure is an Epoch AI estimate as of the date shown; only this comparable subset (same source, same metric) is ranked.
Every other compute disclosure
Not ranked and not scored: capex guidance, contracted GW and spend forecasts use different methodologies per lab and aren't comparable across labs (see methodology).
| Lab | Disclosure | Value | As of | Source |
|---|---|---|---|---|
| Anthropic | Compute contracted since Oct 2025 | ≥14.8 GW | 6 Sept 2026 | The Information via AI-RTZ (opens in new tab) |
| Anthropic | Fixed/minimum compute & infrastructure commitments | ~$265.6B | 30 Jun 2026 | Anthropic S-1, Note 13 (SEC EDGAR) (opens in new tab) |
| OpenAI | Planned capacity by 2030 (told investors) | 30 GW | 9 Sept 2026 | AI-RTZ (opens in new tab) |
| OpenAI | Compute spend forecast through 2030 | ~$750B | 9 Sept 2026 | AI-RTZ (The Information) (opens in new tab) |
| Google DeepMind | Alphabet 2026 capex guidance (company-wide) | $195–205B | 22 Jul 2026 | CNBC (Q2 2026 earnings) (opens in new tab) |
| Meta Superintelligence Labs | Meta 2026 capex guidance (company-wide) | $135–145B | 21 Oct 2026 | Meta Q3 2026 results (opens in new tab) |
| xAI (SpaceXAI) | AI-segment capex, Q1 2026 | $7.7B | 31 Mar 2026 | TechCrunch (S-1) (opens in new tab) |
| Alibaba (Qwen) | Group capex, June quarter | US$9.975B | 30 Jun 2026 | Alibaba June Quarter 2026 results (opens in new tab) |
No compute disclosures gathered yet for Mistral AI, DeepSeek, Moonshot AI (Kimi), Z.ai (Zhipu).
FAQ
What is the biggest AI data center right now?
Of the sites we track, xAI (SpaceXAI)'s Colossus 2, at ~946 MW of current IT power per Epoch AI (opens in new tab), as of 15 Oct 2026.
Where does this number come from?
Why isn't every lab listed?
OpenAI, Google DeepMind, Alibaba (Qwen) have no Epoch AI current-IT-power estimate on file; their other compute disclosures are listed below, not ranked. Mistral AI, DeepSeek, Moonshot AI (Kimi), Z.ai (Zhipu) have no compute disclosures on file.
How far ahead is it?
About 4% more estimated power than #2, Anthropic-Amazon New Carlisle (~910 MW). Computed by us from the two estimates.
What does "current IT power" mean?
The estimated electrical power available to the computing equipment at a site today, not the planned final capacity.