MOSTLY AI vs Scale AI
Which Data Labeling AI tool is better in 2026?
MOSTLY AI
Unlock the power of data with a platform for secure access, high-quality synthetic data generation, and seamless data analysis.
Scale AI
Data labeling and AI infrastructure platform powering frontier models for enterprises and governments.
Side-by-side
Scale AI is the more established option (raised $14.3B); pricing is comparable on both sides.
| Metric | MOSTLY AI | Scale AI |
|---|---|---|
| Taglinei | Unlock the power of data with a platform for secure access, high-quality synthetic data generation, and seamless data analysis. | Data labeling and AI infrastructure platform powering frontier models for enterprises and governments. |
| Foundedi | — | 2016🏆 |
| HQi | — | San Francisco, US |
| Employeesi | — | 1000+🏆 |
| Neuron scorei | 60 | 85🏆 |
| Total fundingi | Undisclosed | $14.3B🏆 |
| Latest roundi | — | Strategic · Jun 2025 |
| Valuationi | — | $29B🏆 |
| Cheapest paid plani | — | — |
| Free plani | ✗ | ✗ |
| Free triali | ✗ | ✗ |
| Top tier pricei | Enterprise · Contact sales | Enterprise / Custom · Contact sales |
| Pricing summaryi | 1 published plans | 1 published plans |
| Categoriesi |
Capability matrix
Developer-facing capabilities and access signals for MOSTLY AI and Scale AI.
| Capability | MOSTLY AI | Scale AI |
|---|---|---|
| MCP support | ✗ | ✗ |
| Public API | ✗ | ✓ |
| Webhooks | ✗ | ✓ |
| OAuth 2.0 | ✗ | ✓ |
| SDK languages | 1 (Python) | 1 (Python) |
| Free plan | ✗ | ✗ |
| Free trial | ✗ | ✗ |
| Verified | ✗ | ✓ |
| Active deal | ✗ | ✗ |
🟢 Strengths of MOSTLY AI
- Strong in Data Labeling
🔵 Strengths of Scale AI
- Has raised more capital ($14.3B vs Undisclosed)
- Higher Neuron score (85 vs 60)
- Newer company (2016)
- Verified profile
Which should you choose?
Choose Scale AI if price matters most — it starts at Enterprise · Contact sales, which is friendlier for teams watching burn. Both Data Labeling tools ship core features, so the cost delta often decides it for small teams and solo operators.
Choose Scale AI if you want the most established option — it has raised $14.3B, suggesting more runway for enterprise features, support, and long-term roadmap. For mission-critical workflows or larger teams, that stability often outweighs a lower monthly price.
Frequently asked questions
MOSTLY AI vs Scale AI — which is better?
It depends on your priority. MOSTLY AI is the leaner option; Scale AI has broader feature depth. See the side-by-side table above.
Is MOSTLY AI cheaper than Scale AI?
No — Scale AI's cheapest paid plan is Enterprise · Contact sales, while MOSTLY AI's is Enterprise · Contact sales.
Do MOSTLY AI and Scale AI offer free plans?
MOSTLY AI: Paid only. Scale AI: Paid only.
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