kitio.aipgvector vs Vespa
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. pgvector is completely free, while Vespa is freemium.
At a glance
Best for
Category
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- Vector column type
- HNSW and IVFFlat indexes
- Multiple distance metrics
- Plain SQL queries
- Wide cloud support
- Hybrid vector and text search
- On-node ML ranking
- Real-time updates
- Tensor support
- Vespa Cloud
| Feature | pgvector | Vespa |
|---|---|---|
| Best for | Open-source vector similarity search extension for Postgres | Open-source engine for search, recommendation and RAG at scale |
| Category | Models & APIs | Models & APIs |
| Pricing model | Free | Freemium |
| Starting price | Free | See pricing page |
| Free plan | Yes, fully free | Yes |
| Made by | pgvector contributors | Vespa.ai |
| Based in | – | Norway |
| Rating | No ratings yet | No ratings yet |
| Key features |
|
|
Pricing compared
pgvector is completely free, while Vespa is freemium.
Free plan
Cheapest paid plan
Top plan
Free trial
Prices in USD, checked Oct 28, 2026 or later. Plans change often, so confirm on each tool's site before you buy.
Pros and cons
pgvector
- Uses your existing database
- Free and widely supported
- Full SQL power
- Slower than specialized engines at scale
- Index builds use memory
- Tuning needs Postgres skills
Vespa
- Proven at very large scale
- Flexible ranking
- Open source
- Steep learning curve
- Heavy to self-host
- Configuration is verbose
Which one should you choose?
Choose pgvector if you want:
- Uses your existing database
- Free and widely supported
- Full SQL power
Watch out: slower than specialized engines at scale.
Choose Vespa if you want:
- Proven at very large scale
- Flexible ranking
- Open source
Watch out: steep learning curve.
pgvector vs Vespa FAQ
What is the difference between pgvector and Vespa?
pgvector: Open-source vector similarity search extension for Postgres. Vespa: Open-source engine for search, recommendation and RAG at scale. Both are models & apis tools.
Is pgvector or Vespa cheaper?
pgvector is completely free, while Vespa is freemium.
Do pgvector and Vespa have free plans?
pgvector: Yes, fully free. Vespa: Yes.
Who makes pgvector?
pgvector is made by pgvector contributors.
Who makes Vespa?
Vespa is made by Vespa.ai, based in Norway.
Which should I choose, pgvector or Vespa?
Choose pgvector if you value uses your existing database and free and widely supported. Choose Vespa if you value proven at very large scale and flexible ranking.