Cognee vs Voyage AI
Which Embeddings & RAG AI tool is better in 2026?
Cognee
Open-source memory engine that turns scattered data into a knowledge graph for AI agents
Voyage AI
State-of-the-art embedding and reranking models for accurate retrieval
Side-by-side
Cognee is the more established option (raised $7.5M); pricing is comparable on both sides.
| Metric | Cognee | Voyage AI |
|---|---|---|
| Taglinei | Open-source memory engine that turns scattered data into a knowledge graph for AI agents | State-of-the-art embedding and reranking models for accurate retrieval |
| Foundedi | 2024 | 2023🏆 |
| HQi | Berlin, Germany | Palo Alto, United States |
| Employeesi | 11-50 | 30🏆 |
| Neuron scorei | 64 | 64 |
| Total fundingi | $7.5M🏆 | Undisclosed |
| Latest roundi | Seed · Feb 2026 | acquired · Feb 2025 |
| Valuationi | — | $220M🏆 |
| Cheapest paid plani | Pricing not disclosed | Pricing not disclosed |
| Free plani | ✓ | ✓ |
| Free triali | ✓ | ✓ |
| Top tier pricei | Pricing not disclosed | Pricing not disclosed |
| Pricing summaryi | Open source | Free |
| Categoriesi |
Capability matrix
Developer-facing capabilities and access signals for Cognee and Voyage AI.
| Capability | Cognee | Voyage AI |
|---|---|---|
| MCP support | ✗ | ✗ |
| Public API | ✓ | ✓ |
| Webhooks | ✗ | ✗ |
| OAuth 2.0 | ✗ | ✗ |
| SDK languages | — | 2 (Python, REST API) |
| Free plan | ✓ | ✓ |
| Free trial | ✓ | ✓ |
| Verified | ✗ | ✗ |
| Active deal | ✗ | ✗ |
🟢 Strengths of Cognee
- Has raised more capital ($7.5M vs Undisclosed)
- Newer company (2024)
🔵 Strengths of Voyage AI
- More mature (2023)
Which should you choose?
Choose Voyage AI if price matters most — it starts at Free, which is friendlier for teams watching burn. Both Embeddings & RAG tools ship core features, so the cost delta often decides it for small teams and solo operators.
Choose Cognee if you want the most established option — it has raised $7.5M, 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
Cognee vs Voyage AI — which is better?
It depends on your priority. Cognee has raised more capital and is the more established option; Voyage AI has broader feature depth. See the side-by-side table above.
Is Cognee cheaper than Voyage AI?
No — Voyage AI's cheapest paid plan is Free, while Cognee's is Open source.
Do Cognee and Voyage AI offer free plans?
Cognee: Yes, has a free plan. Voyage AI: Yes, has a free plan.
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