Qdrant vs RadixArk
Which Infrastructure AI tool is better in 2026?
Qdrant
High-performance vector search engine built in Rust for production-grade AI retrieval.
RadixArk
Open infrastructure for frontier AI, built on SGLang
Side-by-side
RadixArk is the more established option (raised $100M), but Qdrant is cheaper to start.
| Metric | Qdrant | RadixArk |
|---|---|---|
| Taglinei | High-performance vector search engine built in Rust for production-grade AI retrieval. | Open infrastructure for frontier AI, built on SGLang |
| Foundedi | 2021🏆 | 2025 |
| HQi | Berlin, DE | San Francisco, US |
| Employeesi | 51-200 | 1-10🏆 |
| Neuron scorei | 56 | 56 |
| Total fundingi | $50M | $100M🏆 |
| Latest roundi | Series B · Mar 2026 | Seed · May 2026 |
| Valuationi | — | $400M🏆 |
| Cheapest paid plani | —🏆 | Pricing not disclosed |
| Free plani | ✓ Qdrant Cloud Free Tier | ✓ |
| Free triali | ✓ | ✗ |
| Top tier pricei | Qdrant Hybrid Cloud · Contact sales | Pricing not disclosed |
| Pricing summaryi | 5 published plans | Open source |
| Categoriesi |
Capability matrix
Developer-facing capabilities and access signals for Qdrant and RadixArk.
| Capability | Qdrant | RadixArk |
|---|---|---|
| MCP support | ✗ | ✗ |
| Public API | ✗ | ✓ |
| Webhooks | ✗ | ✗ |
| OAuth 2.0 | ✗ | ✗ |
| SDK languages | 6 (Python, TypeScript, Rust, Go…) | — |
| Free plan | ✓ | ✓ |
| Free trial | ✓ | ✗ |
| Verified | ✗ | ✗ |
| Active deal | ✗ | ✗ |
🟢 Strengths of Qdrant
- Offers a free trial
- More mature (2021)
🔵 Strengths of RadixArk
- Has raised more capital ($100M vs $50M)
- Newer company (2025)
Which should you choose?
Choose Qdrant if price matters most — it starts at Free, which is friendlier for teams watching burn. Both AI Infrastructure tools ship core features, so the cost delta often decides it for small teams and solo operators.
Choose RadixArk if you want the most established option — it has raised $100M, 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
Qdrant vs RadixArk — which is better?
It depends on your priority. Qdrant is the leaner option; RadixArk has broader feature depth. See the side-by-side table above.
Is Qdrant cheaper than RadixArk?
Yes — Qdrant's cheapest paid plan is Free, while RadixArk's is Open source.
Do Qdrant and RadixArk offer free plans?
Qdrant: Yes, has a free plan. RadixArk: Yes, has a free plan.
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