Our verdict
Scale AI is the best known name in AI training data, but since June 2025 Meta has held 49% of it and its founder joined Meta. For any lab or company that competes with Meta, that ownership is the deciding fact. Scale says the deal valued it above $29B. It publishes too little on quality and pricing for a full score.
The facts, with receipts
Every row links to its source.
| Fact | Value and source |
|---|---|
| Valuation | Above $29B with Meta's investment |
| Ownership | Meta holds 49% after a deal reported at $14.3B; founder Alexandr Wang joined Meta |
How we rated them
The rating for AI teams is a weighted average of the parts below, using only what is published. See how we rate.
Not enough public information to draw this chart yet. We only chart what a source supports.
- Expert depth and vetting No data
- Quality systems No data
- Security and neutrality 5.0
- Scale and speed No data
- Transparency No data
Provenance
Where the work comes from and who stands behind it. Anything we cannot source says so.
- Where the workforce is located
- Not disclosed
- How experts are vetted
- Not disclosed
- Annotation platform or tooling
- Not disclosed
- Subcontracting
- Not disclosed
- Security certifications
- Not disclosed
- Ownership
- 49% held by Meta since June 20251
Strengths and weaknesses
Incidents and conflicts
Meta holds 49% after a deal reported at $14.3B; founder Alexandr Wang joined Meta1
Reader reviews
What people who worked with Scale AI say
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FAQ
Scale AI: questions, answered
Ownership is the first thing to check. Meta has held 49% of Scale AI since June 2025, which matters to any lab that competes with Meta. Surge AI says it has never taken outside funding, so no lab owns part of it. Ask every vendor for its owners, its SOC 2 report and its incident history before a pilot.1,5
For labs avoiding Meta's 49% stake, the largest independent options by reported revenue are Mercor (above $2B gross run rate), Surge AI ($1B to $1.2B in 2024, no outside investors) and Handshake AI (about $1.15B gross ARR). Turing reported about $300M ARR. Check each one's ownership, security record and pilot terms.1,6,7,5,8,9
Change log
- First published.