Labelbox vs MOSTLY AI
Which Data Labeling AI tool is better in 2026?
Labelbox
RL data engine and human expertise platform for training frontier AI
MOSTLY AI
Unlock the power of data with a platform for secure access, high-quality synthetic data generation, and seamless data analysis.
Side-by-side
Labelbox is the more established option (raised $189M); pricing is comparable on both sides.
| Metric | Labelbox | MOSTLY AI |
|---|---|---|
| Taglinei | RL data engine and human expertise platform for training frontier AI | Unlock the power of data with a platform for secure access, high-quality synthetic data generation, and seamless data analysis. |
| Foundedi | 2018🏆 | — |
| HQi | San Francisco, United States | — |
| Employeesi | 300🏆 | — |
| Neuron scorei | 75🏆 | 60 |
| Total fundingi | $189M🏆 | Undisclosed |
| Latest roundi | series_d · Jan 2022 | — |
| Valuationi | — | — |
| Cheapest paid plani | Pricing not disclosed | — |
| Free plani | ✓ | ✗ |
| Free triali | ✓ | ✗ |
| Top tier pricei | Pricing not disclosed | Enterprise · Contact sales |
| Pricing summaryi | Free | 1 published plans |
| Categoriesi |
Capability matrix
Developer-facing capabilities and access signals for Labelbox and MOSTLY AI.
| Capability | Labelbox | MOSTLY AI |
|---|---|---|
| MCP support | ✗ | ✗ |
| Public API | ✓ | ✗ |
| Webhooks | ✓ | ✗ |
| OAuth 2.0 | ✓ | ✗ |
| SDK languages | 1 (Python) | 1 (Python) |
| Free plan | ✓ | ✗ |
| Free trial | ✓ | ✗ |
| Verified | ✗ | ✗ |
| Active deal | ✗ | ✗ |
🟢 Strengths of Labelbox
- Has raised more capital ($189M vs Undisclosed)
- Higher Neuron score (75 vs 60)
- Offers a free plan
- Offers a free trial
🔵 Strengths of MOSTLY AI
- Strong in Data Labeling
Which should you choose?
Choose MOSTLY 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 Labelbox if you want the most established option — it has raised $189M, 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
Labelbox vs MOSTLY AI — which is better?
It depends on your priority. Labelbox has raised more capital and is the more established option; MOSTLY AI has broader feature depth. See the side-by-side table above.
Is Labelbox cheaper than MOSTLY AI?
No — MOSTLY AI's cheapest paid plan is Enterprise · Contact sales, while Labelbox's is Free.
Do Labelbox and MOSTLY AI offer free plans?
Labelbox: Yes, has a free plan. MOSTLY AI: Paid only.
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