Toloka vs Union.ai
Which Data Engineering AI tool is better in 2026?
Toloka
Union.ai
AI development infrastructure for durable, production-grade ML and agent workflows
Side-by-side
Toloka is the more established option (raised $72M); pricing is comparable on both sides.
| Metric | Toloka | Union.ai |
|---|---|---|
| Taglinei | — | AI development infrastructure for durable, production-grade ML and agent workflows |
| Foundedi | 2014🏆 | 2021 |
| HQi | — | Bellevue, US |
| Employeesi | 11-50 | 51-200🏆 |
| Neuron scorei | 68 | 70🏆 |
| Total fundingi | $72M🏆 | $58M |
| Latest roundi | Strategic Investment | Series A · Feb 2026 |
| Valuationi | — | — |
| Cheapest paid plani | Pricing not disclosed | Pricing not disclosed |
| Free plani | ✓ | ✗ |
| Free triali | ✓ | ✓ |
| Top tier pricei | Pricing not disclosed | Pricing not disclosed |
| Pricing summaryi | Free | Free trial |
| Categoriesi |
Capability matrix
Developer-facing capabilities and access signals for Toloka and Union.ai.
| Capability | Toloka | Union.ai |
|---|---|---|
| MCP support | ✗ | ✗ |
| Public API | ✗ | ✓ |
| Webhooks | ✗ | ✗ |
| OAuth 2.0 | ✗ | ✗ |
| SDK languages | — | — |
| Free plan | ✓ | ✗ |
| Free trial | ✓ | ✓ |
| Verified | ✗ | ✗ |
| Active deal | ✗ | ✗ |
🟢 Strengths of Toloka
- Has raised more capital ($72M vs $58M)
- Offers a free plan
- More mature (2014)
🔵 Strengths of Union.ai
- Higher Neuron score (70 vs 68)
- Newer company (2021)
Which should you choose?
Choose Union.ai if price matters most — it starts at Free trial, which is friendlier for teams watching burn. Both AI Data Engineering tools ship core features, so the cost delta often decides it for small teams and solo operators.
Choose Toloka if you want the most established option — it has raised $72M, 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
Toloka vs Union.ai — which is better?
It depends on your priority. Toloka has raised more capital and is the more established option; Union.ai has broader feature depth. See the side-by-side table above.
Is Toloka cheaper than Union.ai?
No — Union.ai's cheapest paid plan is Free trial, while Toloka's is Free.
Do Toloka and Union.ai offer free plans?
Toloka: Yes, has a free plan. Union.ai: Free trial only.
Explore more AI Data Engineering tools
Contextual paths to related AI startups, deals and rankings.