Doubleword vs Zilliz
Which Infrastructure AI tool is better in 2026?
Doubleword
Doubleword, formerly TitanML, is a London-based company building a unified self-hosted
Zilliz
Fully managed vector database for AI, built by the creators of Milvus
Side-by-side
Zilliz leads on both fronts — more capital raised ($113M) and a lower entry price than Doubleword.
| Metric | Doubleword | Zilliz |
|---|---|---|
| Taglinei | Doubleword, formerly TitanML, is a London-based company building a unified self-hosted | Fully managed vector database for AI, built by the creators of Milvus |
| Foundedi | 2021 | 2017🏆 |
| HQi | London, United Kingdom | Redwood City, United States |
| Employeesi | 11-50 | 200🏆 |
| Neuron scorei | 49 | 75🏆 |
| Total fundingi | $12M | $113M🏆 |
| Latest roundi | Series A | series_b · Aug 2022 |
| Valuationi | — | — |
| Cheapest paid plani | Pricing not disclosed | Pricing not disclosed🏆 |
| Free plani | ✓ | ✓ |
| Free triali | ✓ | ✓ |
| Top tier pricei | Pricing not disclosed | Pricing not disclosed |
| Pricing summaryi | Free | Free |
| Categoriesi |
Capability matrix
Developer-facing capabilities and access signals for Doubleword and Zilliz.
| Capability | Doubleword | Zilliz |
|---|---|---|
| MCP support | ✗ | ✓ |
| Public API | ✗ | ✓ |
| Webhooks | ✗ | ✗ |
| OAuth 2.0 | ✗ | ✗ |
| SDK languages | — | 5 (Python, Node.js, Go, Java…) |
| Free plan | ✓ | ✓ |
| Free trial | ✓ | ✓ |
| Verified | ✗ | ✗ |
| Active deal | ✗ | ✗ |
🟢 Strengths of Doubleword
- Newer company (2021)
🔵 Strengths of Zilliz
- Has raised more capital ($113M vs $12M)
- Higher Neuron score (75 vs 49)
- More mature (2017)
Which should you choose?
Choose Zilliz 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 Zilliz if you want the most established option — it has raised $113M, 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
Doubleword vs Zilliz — which is better?
It depends on your priority. Doubleword is the leaner option; Zilliz is cheaper to start. See the side-by-side table above.
Is Doubleword cheaper than Zilliz?
No — Zilliz's cheapest paid plan is Free, while Doubleword's is Free.
Do Doubleword and Zilliz offer free plans?
Doubleword: Yes, has a free plan. Zilliz: Yes, has a free plan.
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