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Scale AI

Private

AI Data Infrastructure

Founded 2016San Francisco, CA~1,500 employees
Website

Valuation

$29B (Meta 49% stake, 2025)

Total Funding

$15.9B (across 9 rounds, 62 investors)

Revenue

$870M 2024; ~$2B ARR 2025

Profit Status

Profitable on some segments; pivoting to defense

Employees

~1,500

About Scale AI

Scale AI provides data labeling and synthetic data infrastructure that powers AI training for leading frontier labs and enterprises. The 'picks and shovels' of the AI gold rush.

Company History

Founded 2016 by 19-year-old Alexandr Wang. Grew from data labeling to full AI infrastructure. Meta invested $14.3B for 49% stake (2025) - valuing Scale at $29B. $2B ARR by 2025. Pivoted heavily to defense after Google/OpenAI/xAI paused engagements over data confidentiality concerns. DoD Thunderforge prime contract (Anduril + Microsoft). Pentagon $500M CDAO contract boost (May 2026).

Products & Services

Scale Data EngineScale Donovan (Defense)SpellbookRLHF Platform

Company Details

Focus Area

AI Data Infrastructure

Stage

Private

Founded

2016

Headquarters

San Francisco, CA

Employees

~1,500

Financial Overview

Total Funding

$15.9B (across 9 rounds, 62 investors)

Valuation

$29B (Meta 49% stake, 2025)

Revenue

$870M 2024; ~$2B ARR 2025

Profit Status

Profitable on some segments; pivoting to defense

Funding Rounds

  • Series E$325M
    2021Tiger Global, Coatue
  • Series F$1B
    2024Amazon, Meta
  • Meta Strategic$14.3B
    2025Meta (49% stake)

Key Investors

Meta (49% stake, $14.3B)Tiger GlobalCoatueFounders FundIndex Ventures

Key People

  • Alexandr Wang (CEO)
  • Lucy Guo (co-founder)

Competitive Landscape

AppenSurge AILabelboxDataAnnotation

Tags

Data Labeling
Infrastructure
Enterprise
Defense