Deep Principle vs OpenEvidence
Which Research Assistants AI tool is better in 2026?
Deep Principle
AI scientist platform for chemistry and materials discovery
OpenEvidence
AI medical assistant for clinicians
Side-by-side
OpenEvidence is the more established option (raised $735M); pricing is comparable on both sides.
| Metric | Deep Principle | OpenEvidence |
|---|---|---|
| Taglinei | AI scientist platform for chemistry and materials discovery | AI medical assistant for clinicians |
| Foundedi | 2023 | 2022🏆 |
| HQi | Hangzhou, China | San Francisco, US |
| Employeesi | — | 50-200🏆 |
| Neuron scorei | 30 | 63🏆 |
| Total fundingi | Undisclosed | $735M🏆 |
| Latest roundi | — | Series D · Jan 2026 |
| Valuationi | — | $12B🏆 |
| Cheapest paid plani | Pricing not disclosed | — |
| Free plani | ✗ | ✗ |
| Free triali | ✗ | ✗ |
| Top tier pricei | Pricing not disclosed | Enterprise · Contact sales |
| Pricing summaryi | Enterprise · Contact sales | 1 published plans |
| Categoriesi |
Capability matrix
Developer-facing capabilities and access signals for Deep Principle and OpenEvidence.
| Capability | Deep Principle | OpenEvidence |
|---|---|---|
| MCP support | ✗ | ✗ |
| Public API | ✗ | ✓ |
| Webhooks | ✗ | ✗ |
| OAuth 2.0 | ✗ | ✗ |
| SDK languages | — | 2 (TypeScript, Python) |
| Free plan | ✗ | ✗ |
| Free trial | ✗ | ✗ |
| Verified | ✗ | ✓ |
| Active deal | ✗ | ✗ |
🟢 Strengths of Deep Principle
- Newer company (2023)
🔵 Strengths of OpenEvidence
- Has raised more capital ($735M vs Undisclosed)
- Higher Neuron score (63 vs 30)
- More mature (2022)
- Verified profile
Which should you choose?
Choose OpenEvidence if price matters most — it starts at Freemium, 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
Deep Principle vs OpenEvidence — which is better?
It depends on your priority. Deep Principle is the leaner option; OpenEvidence has broader feature depth. See the side-by-side table above.
Is Deep Principle cheaper than OpenEvidence?
No — OpenEvidence's cheapest paid plan is Freemium, while Deep Principle's is Enterprise · Contact sales.
Do Deep Principle and OpenEvidence offer free plans?
Deep Principle: Paid only. OpenEvidence: Paid only.
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