#GPU clusters

A wide daylit comparison bay with several infrastructure demonstration stations receding down its length, a portable gas-turbine genset skid caught mid-roll on its casters toward the nearest bench

How xAI's Infrastructure Build Compares to the Rest of the Field

xAI says Colossus is the fastest AI supercomputer ever built. Set beside Microsoft, Google, and Amazon's own infrastructure disclosures, the documented differences are in speed, siting, and power sourcing, not in a single winner.

By Brecht Corbeel · August 12, 2026 · 17 min read

A weatherproof air-monitoring mast being leveled at a chain-link boundary, gas-turbine enclosures to one side and a windowless data hall receding beyond it

AI Industry

How Grok and Colossus Actually Work, as Far as the Record Shows

xAI has published some specifics about Grok's training and a great deal about Colossus's scale. Reporting and litigation filled in most of what it has not said about power. This piece keeps each kind of evidence separate.

By Brecht Corbeel · August 12, 2026 · 15 min read

Browse by Category

Surprise me →

All AI Hardware & Semiconductors 100 AI Agents & Systems 33 Foundation Models 27 Model Evaluation 15 AI Industry 9 Edge AI & Electronics 7 AI Safety 7 AI Research 7 Open Models 6 AI Infrastructure 5 Industry Analysis 2 Datacenters & Infrastructure 2 Writing & Information 1 Structural Biology 1 Small & Edge Models 1 Semiconductor Markets 1 Security & Technology 1 Security 1 Scientific Revolution 1 Robotics & Embodied AI 1 Quantum Information 1 Planetary Science 1 Physics 1 Particle Physics 1 Origins & Astrobiology 1 Open-Weight Models 1 Neuroscience 1 Metrology 1 Mathematics & Computation 1 Materials Science 1 Labour & Technology 1 Interpretability 1 Institutions & State Capacity 1 Institutions & Economy 1 Inference Economics 1 Industrial Revolutions 1 Humanity & Technology 1 History of Technology 1 History of Computing 1 Governance & Policy 1 Evolution & Ecology 1 Ethics of Technology 1 Energy & Civilization 1 Earth & Climate 1 Demography & Urbanization 1 Data & Training 1 Cumulative Culture 1 Cosmology 1 Condensed Matter 1 Chemistry & Catalysis 1 Alignment & Safety 1 Agriculture & Cities 1 Agent Evaluation 1 AI Security 1 AI & The Web 1