{"data":{"slug":"xai-colossus","etype":"datacenter","name":"xAI Colossus","cat":"AI Campus","subtitle":"100,000 GPUs in 122 days — the build that reset the industry's clock.","summary":"xAI converted a former Electrolux appliance factory in Memphis into the world's most famous AI supercomputer: roughly 100,000 H100-class GPUs brought online in 122 days in 2024, doubled to ~200,000 within months, running on Spectrum-X Ethernet with Supermicro and Dell systems and Tesla Megapacks buffering power. Dozens of on-site gas turbines bridged the grid gap — and drew air-permit challenges from local groups. Grok 3 and 4 were trained here.","attrs":[{"b":"Official","g":"Overview","l":"Operator","v":"xAI"},{"b":"Reported","g":"Overview","l":"First online","v":"September 2024 (122-day build)"},{"b":"Vendor claim","g":"Scale","l":"GPUs","v":"~100,000 at launch; ~200,000 by early 2025 (company statements)"},{"b":"Reported","g":"Power","l":"Supply","v":"MLGW/TVA grid + on-site gas turbines + Tesla Megapack buffering"},{"b":"Official","g":"Overview","l":"Notable","v":"Trained Grok 3 and Grok 4"}],"kf":{"chips":"~200,000 H100/H200 + GB200","power":"~300 MW class (reported)","status":"Operating","operator":"xAI"},"aliases":["Colossus","Memphis supercluster"],"ticker":null,"exchange":null,"hq":null,"founded":null,"website":null,"status":"Operating; expanding","region":"Memphis, Tennessee, US","asof":"2026-01-15","sources":[{"url":"https://nvidianews.nvidia.com/news/spectrum-x-ethernet-networking-xai-colossus","label":"NVIDIA on Colossus/Spectrum-X"}]},"meta":{"found":true,"count":1,"served_from":"site cache (no live upstream calls)","as_of":"2026-10-14T04:50:52+00:00","disclaimer":"Research and information only — not investment advice. Structured records carry basis labels (vendor spec / reported / estimate); market quotes are delayed/indicative.","attribution":"Records compiled from vendor documentation, official filings and reputable public reporting; market quotes via financial data providers. See /data-sources."}}