NAVIGATION

What is xAI?

Definition

xAI

xAI is an artificial intelligence research company founded by Elon Musk, focused on building advanced frontier foundation models (Grok series) and massive supercomputing datacenters (Colossus).

Why It Matters for AI Builders

Represents one of the world's largest private AI supercomputing facilities pushing the boundaries of raw compute scale.

Detailed Deep Dive

xAI rapidly emerged as a major competitor in frontier artificial intelligence development. By constructing the Colossus datacenter featuring 100,000+ liquid-cooled NVIDIA GPUs, xAI scales foundation model training to explore deep scientific questions and real-time reasoning.

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Frequently Asked Questions

Q:What is Grok?

Grok is the frontier model series developed by xAI, trained on real-time data from X (formerly Twitter) and integrated with vision and reasoning capabilities.

Q:What is the Colossus supercomputer cluster?

Colossus is xAI's 100,000+ NVIDIA H100 GPU cluster in Memphis, built in record time to train next-generation Grok models.

Quick Facts

  • CategoryAlgorithms & Models
  • Key ApplicationFrontier LLM development, real-time social data reasoning, multimodal AI, and large-scale GPU datacenter engineering.

Coverage Trend12 Weeks

12w agoToday

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Cite This Term

Reference this definition in your articles, research, or documentation to credit this source:

[xAI | SPIDITS Glossary](https://spidits.com/ai-glossary/xai)

xAI Media Coverage & Intelligence

ACQUISITIONAug 13, 2026

SpaceXAI Releases Flagship Grok 4.6 Model with Advanced Reasoning Capabilities

SpaceXAI today released Grok 4.6, a large language model that it says can outperform Anthropic PBC's Claude Fable 5 in some areas. The company was known as xAI until last month. The Elon Musk-founded artificial intelligence provider rebranded in connection with its acquisition by SpaceX Corp.

SiliconANGLEAug 13, 2026

SpaceXAI releases flagship Grok 4.6 model with advanced reasoning capabilities

SpaceXAI today released Grok 4.6, a large language model that it says can outperform Anthropic PBC's Claude Fable 5 in some areas. The company was known as xAI until last month. The Elon Musk-founded artificial intelligence provider rebranded in connection with its acquisition by SpaceX Corp. In...

VentureBeatAug 11, 2026

SpaceXAI's Grok Bot turns agents into persistent digital coworkers that can operate your apps for $120-per-month

SpaceXAI, the division of SpaceX f ormerly known as xAI , is launching an early beta version of Grok Bot , a new agent designed to move AI assistants beyond...

TechCrunch AIAug 11, 2026

General Catalyst leads $1.1B round into 2-month-old River AI

River AI, a startup founded by xAI co-founder Igor Babuschkin, has a fascinating vision for personal agents and secured $1.1 billion out of the gate.

WiredAug 1, 2026

7 States' Water Systems Hit by Cyberattacks Likely Tied to Iran

Plus: The FBI eyes AI-powered tech to detect future crimes, Russia charges Telegram's founder, xAI sues to stop a state's "nudification" ban, and the...

Ars TechnicaJul 29, 2026

Elon Musk's xAI is trying to sue its way out of a Grok reckoning

Musk defends Grok, says Minnesota's nudifying app ban is unconstitutional.

ACQUISITIONJul 21, 2026

🔬Causal Models Need Causal Data - Xaira's X-Cell Model for Drug Discovery (Bo Wang & Ci Chu, Chief Discovery Officer & Chief AI Scientist)

Xaira Therapeutics is all in on data generation for model building! We talk with Bo Wang and Ci Chu about how and why.

xAI BlogJul 16, 2026

xAI releases Grok 4.5 featuring Cursor integration and Microsoft Office add-ins

Grok 4.5 delivers high performance in Rust, C++, and repository-level multi-file code editing.

BloombergJul 9, 2026

SpaceX and xAI compute cluster powers Grok 4.5 training run

xAI leverages expanded Colossus GPU supercluster to deliver high-speed token generation for coding workloads.

TechCrunch AIJun 10, 2026

xAI fired an engineer who raised alarms about Grok safety, new lawsuit claims

A former xAI engineer is suing the company and SpaceX, alleging he was fired for raising AI safety concerns about Grok days before SpaceX's historic IPO.

WiredJun 3, 2026

xAI Asks Court to Strip Alleged Grok Deepfake Nudes Victims of Anonymity

Four people suing Elon Musk's AI firm under pseudonyms due to the risks of being identified may face a difficult choice: Reveal your real names, or drop the...