OpenEvidence vs Undermind
Which Research Assistants AI tool is better in 2026?
OpenEvidence
AI medical assistant for clinicians
Undermind
AI agent that runs exhaustive literature searches across scientific papers
Side-by-side
OpenEvidence is the more established option (raised $735M), but Undermind is cheaper to start.
| Metric | OpenEvidence | Undermind |
|---|---|---|
| Taglinei | AI medical assistant for clinicians | AI agent that runs exhaustive literature searches across scientific papers |
| Foundedi | 2022🏆 | 2023 |
| HQi | San Francisco, US | San Francisco, United States |
| Employeesi | 50-200 | 1-10🏆 |
| Neuron scorei | 63🏆 | 32 |
| Total fundingi | $735M🏆 | Undisclosed |
| Latest roundi | Series D · Jan 2026 | — |
| Valuationi | $12B🏆 | — |
| Cheapest paid plani | — | From $15/mo🏆 |
| Free plani | ✗ | ✓ |
| Free triali | ✗ | ✗ |
| Top tier pricei | Enterprise · Contact sales | Pricing not disclosed |
| Pricing summaryi | 1 published plans | Free · From $15/mo |
| Categoriesi |
Capability matrix
Developer-facing capabilities and access signals for OpenEvidence and Undermind.
| Capability | OpenEvidence | Undermind |
|---|---|---|
| MCP support | ✗ | ✗ |
| Public API | ✓ | ✗ |
| Webhooks | ✗ | ✗ |
| OAuth 2.0 | ✗ | ✗ |
| SDK languages | 2 (TypeScript, Python) | — |
| Free plan | ✗ | ✓ |
| Free trial | ✗ | ✗ |
| Verified | ✓ | ✗ |
| Active deal | ✗ | ✗ |
🟢 Strengths of OpenEvidence
- Has raised more capital ($735M vs Undisclosed)
- Higher Neuron score (63 vs 32)
- More mature (2022)
- Verified profile
🔵 Strengths of Undermind
- Offers a free plan
- Lower starting price ($15/mo)
- Newer company (2023)
Which should you choose?
Choose Undermind if price matters most — it starts at Free · From $15/mo, which is friendlier for teams watching burn. Both Research Assistants tools ship core features, so the cost delta often decides it for small teams and solo operators.
Choose OpenEvidence if you want the most established option — it has raised $735M, 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
OpenEvidence vs Undermind — which is better?
It depends on your priority. OpenEvidence has raised more capital and is the more established option; Undermind is cheaper to start. See the side-by-side table above.
Is OpenEvidence cheaper than Undermind?
No — Undermind's cheapest paid plan is Free · From $15/mo, while OpenEvidence's is Freemium.
Do OpenEvidence and Undermind offer free plans?
OpenEvidence: Paid only. Undermind: Yes, has a free plan.
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