Upstage AI vs Vellum
Which Agents AI tool is better in 2026?
Upstage AI
Building intelligence for the future of work with high-performance AI solutions.
Vellum
An AI Assistant that adapts to how you work, acts before you ask, and is entirely yours to customize.
Side-by-side
| Upstage AI | Vellum | |
|---|---|---|
| Tagline | Building intelligence for the future of work with high-performance AI solutions. | An AI Assistant that adapts to how you work, acts before you ask, and is entirely yours to customize. |
| Founded | — | — |
| HQ | KR | — |
| Employees | — | — |
| Total funding | Undisclosed | Undisclosed |
| Latest round | — | — |
| Valuation | — | — |
| Cheapest paid plan | — | Pricing not disclosed |
| Free plan | ✗ | ✓ |
| Free trial | ✗ | ✓ |
| Top tier price | Enterprise · Contact sales | Pricing not disclosed |
| Pricing summary | 1 published plans | Enterprise · Contact sales |
| Categories |
Capability matrix
Developer-facing capabilities and access signals for Upstage AI and Vellum.
| Capability | Upstage AI | Vellum |
|---|---|---|
| MCP support | ✗ | ✗ |
| Public API | ✗ | ✗ |
| Webhooks | ✗ | ✗ |
| OAuth 2.0 | ✗ | ✗ |
| SDK languages | — | — |
| Free plan | ✗ | ✓ |
| Free trial | ✗ | ✓ |
| Verified | ✗ | ✗ |
| Active deal | ✗ | ✗ |
🟢 Strengths of Upstage AI
- Higher Neuron score (15 vs 11)
🔵 Strengths of Vellum
- Offers a free plan
- Offers a free trial
Which should you choose?
Choose Vellum if price matters most — it starts at Enterprise · Contact sales, which is friendlier for teams watching burn. Both AI Agents tools ship core features, so the cost delta often decides it for small teams and solo operators.
Choose Vellum if you want the most established option — it has raised Undisclosed, 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
Upstage AI vs Vellum — which is better?
It depends on your priority. Upstage AI is the leaner option; Vellum has broader feature depth. See the side-by-side table above.
Is Upstage AI cheaper than Vellum?
No — Vellum's cheapest paid plan is Enterprise · Contact sales, while Upstage AI's is Enterprise · Contact sales.
Do Upstage AI and Vellum offer free plans?
Upstage AI: Paid only. Vellum: Yes, has a free plan.
Explore more AI Agents tools
Contextual paths to related AI startups, deals and rankings.