Foundation Models

xAI

ByDecipherU Editorial
Headquarters
Palo Alto, California
Founded
2023
Employees
100-500
Ownership
private

xAI is Elon Musk's AI company, founded in 2023 and shipping the Grok model family integrated with X (formerly Twitter) data access. The company differentiates on real-time data ingestion via X and on a public stance favoring open-weight releases for some model versions.

Why this matters in 2026

xAI's release of Grok-1 weights under Apache 2.0 in March 2024 (the largest open-weight release at the time, at 314B parameters) set a precedent other labs cited when justifying their own open-weight strategies. The X-data-integration angle remains the operational moat.

Products

  • Grok (consumer access via X Premium)
  • Grok API (developer access)
  • Grok-1 open-weight release (March 2024)

Primary focus

Grok model family with X-platform data integration

Applied AI roles xAI typically hires

DecipherU Files featuring xAI

xAI careers page →x.ai
Last verified: June 2026?Report an inaccuracy

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