kitio.aiAdded Oct 28, 2026
Vespa
FreemiumOpen-source engine for search, recommendation and RAG at scale
What is Vespa?
Vespa is an open-source platform for large-scale search, recommendation and RAG that combines vector search, text search and machine-learned ranking in one engine. It was spun out of Yahoo and powers services handling very high query volumes.
Vespa evaluates ranking models such as ONNX or tensor expressions at query time on the content nodes, so results can be personalized without a separate reranking service. It supports real-time updates and structured filtering.
The engine is free under Apache 2.0 and can be self-hosted with Docker or Kubernetes. Vespa Cloud provides a managed service with a free trial and usage-based pricing.
Features
- Hybrid vector and text search
- On-node ML ranking
- Real-time updates
- Tensor support
- Vespa Cloud
Tags
Releases
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Organization
Vespa.ai
🇳🇴 Norway
Listed by kitio.ai · unverified owner
Pricing
- Pricing model
- Freemium
- Paid options from
- Not listed
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Pros and cons
Pros
- Proven at very large scale
- Flexible ranking
- Open source
Cons
- Steep learning curve
- Heavy to self-host
- Configuration is verbose
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Q&A
What is Vespa?
Vespa is an open-source platform for large-scale search, recommendation and RAG that combines vector search, text search and machine-learned ranking in one engine. It was spun out of Yahoo and powers services handling very high query volumes.
How much does Vespa cost?
Vespa is freemium.
Is there a free version of Vespa?
Yes. Vespa has a free plan, and paid plans add more usage and features.
What are the main features of Vespa?
Hybrid vector and text search, On-node ML ranking, Real-time updates, Tensor support, Vespa Cloud.
Who makes Vespa?
Vespa is made by Vespa.ai.
What are the best alternatives to Vespa?
Popular alternatives include pgvector, Faiss, Hugging Face.