Chai Discovery vs OpenEvidence
Which Healthcare AI tool is better in 2026?
Chai Discovery
Engineering better molecules using artificial intelligence for drug-like antibody design against challenging targets with atomic precision.
OpenEvidence
AI medical assistant for clinicians
Side-by-side
| Chai Discovery | OpenEvidence | |
|---|---|---|
| Tagline | Engineering better molecules using artificial intelligence for drug-like antibody design against challenging targets with atomic precision. | AI medical assistant for clinicians |
| Founded | — | 2022 |
| HQ | — | San Francisco, US |
| Employees | — | 50-200 |
| Total funding | $130M | $735M |
| Latest round | series-b | Series D · Jan 2026 |
| Valuation | — | $12B |
| Cheapest paid plan | — | — |
| Free plan | ✗ | ✓ Free for Verified US Physicians |
| Free trial | ✗ | ✗ |
| Top tier price | Enterprise Access · Contact sales | — |
| Pricing summary | 1 published plans | 1 published plans |
| Categories |
Capability matrix
Developer-facing capabilities and access signals for Chai Discovery and OpenEvidence.
| Capability | Chai Discovery | OpenEvidence |
|---|---|---|
| MCP support | ✗ | ✗ |
| Public API | ✗ | ✓ |
| Webhooks | ✗ | ✗ |
| OAuth 2.0 | ✗ | ✗ |
| SDK languages | — | 2 (TypeScript, Python) |
| Free plan | ✗ | ✓ |
| Free trial | ✗ | ✗ |
| Verified | ✗ | ✓ |
| Active deal | ✗ | ✗ |
🟢 Strengths of Chai Discovery
- Strong in AI Healthcare
🔵 Strengths of OpenEvidence
- Has raised more capital ($735M vs $130M)
- Higher Neuron score (60 vs 29)
- Offers a free plan
- Newer company (2022)
Which should you choose?
Choose OpenEvidence if price matters most — it starts at Free, which is friendlier for teams watching burn. Both AI Healthcare 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
Chai Discovery vs OpenEvidence — which is better?
It depends on your priority. Chai Discovery is the leaner option; OpenEvidence has broader feature depth. See the side-by-side table above.
Is Chai Discovery cheaper than OpenEvidence?
No — OpenEvidence's cheapest paid plan is Free, while Chai Discovery's is Enterprise · Contact sales.
Do Chai Discovery and OpenEvidence offer free plans?
Chai Discovery: Paid only. OpenEvidence: Yes, has a free plan.
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