VAST Data vs Weaviate
Which Developer Tools AI tool is better in 2026?
VAST Data
Unifying software layer for AI infrastructure
Weaviate
Open-source AI-native vector database
Side-by-side
VAST Data is the more established option (raised $2.4B), but Weaviate is cheaper to start.
| Metric | VAST Data | Weaviate |
|---|---|---|
| Taglinei | Unifying software layer for AI infrastructure | Open-source AI-native vector database |
| Foundedi | 2016🏆 | 2019 |
| HQi | US | Amsterdam, NL |
| Employeesi | 201-500🏆 | 200-500 |
| Neuron scorei | 88🏆 | 50 |
| Total fundingi | $2.4B🏆 | $50M |
| Latest roundi | Series F · Apr 2026 | Series C · Oct 2025 |
| Valuationi | $30B🏆 | $200M |
| Cheapest paid plani | — | —🏆 |
| Free plani | ✗ | ✓ Open Source |
| Free triali | ✗ | ✓ |
| Top tier pricei | Enterprise · Contact sales | Weaviate Cloud · Contact sales |
| Pricing summaryi | 1 published plans | 2 published plans |
| Categoriesi |
Capability matrix
Developer-facing capabilities and access signals for VAST Data and Weaviate.
| Capability | VAST Data | Weaviate |
|---|---|---|
| MCP support | ✓ | ✗ |
| Public API | ✓ | ✓ |
| Webhooks | ✗ | ✗ |
| OAuth 2.0 | ✗ | ✗ |
| SDK languages | — | 5 (Python, Go, TypeScript, JavaScript…) |
| Free plan | ✗ | ✓ |
| Free trial | ✗ | ✓ |
| Verified | ✗ | ✓ |
| Active deal | ✗ | ✗ |
🟢 Strengths of VAST Data
- Has raised more capital ($2.4B vs $50M)
- Higher Neuron score (88 vs 50)
- More mature (2016)
🔵 Strengths of Weaviate
- Offers a free plan
- Offers a free trial
- Newer company (2019)
- Verified profile
Which should you choose?
Choose Weaviate if price matters most — it starts at Open source, which is friendlier for teams watching burn. Both AI Developer Tools tools ship core features, so the cost delta often decides it for small teams and solo operators.
Choose VAST Data if you want the most established option — it has raised $2.4B, 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
VAST Data vs Weaviate — which is better?
It depends on your priority. VAST Data has raised more capital and is the more established option; Weaviate is cheaper to start. See the side-by-side table above.
Is VAST Data cheaper than Weaviate?
No — Weaviate's cheapest paid plan is Free, while VAST Data's is Enterprise · Contact sales.
Do VAST Data and Weaviate offer free plans?
VAST Data: Paid only. Weaviate: Yes, has a free plan.
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