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Vespa

Vespa

Open SourceFull-Stack Search

The open big data serving engine

CategoryhybridLanguageJava / C++LicenseApache-2.0Websitevespa.ai

About Vespa

Vespa is an open-source platform for serving large-scale search, recommendation, and AI applications in real time. It combines vector search, full-text search, and structured data retrieval in a unified system. Vespa supports machine learning inference, ranking, and real-time data updates, making it suitable for high-performance AI applications. It is widely used in large-scale production environments that require fast and reliable search capabilities.

Key features

Combined text + vector search
Real-time indexing
ML model serving
Horizontal auto-scaling
Multi-phase ranking
Billions of documents

Pricing

Open SourceFree
Self-hosted
Vespa CloudPay-as-you-go
 

Common use cases

Enterprise search
E-commerce ranking
Content personalization
Conversational AI

Common questions about Vespa

Can I self-host Vespa?

Yes, Vespa offers both self-hosted and managed cloud deployment options. You can start with one model and migrate to the other as your needs evolve.

What's the difference between self-hosted and cloud?

Self-hosted gives you complete control over deployment and data, while the managed cloud service handles infrastructure, scaling, and operations automatically. Both use the same core technology.

What are the main use cases for Vespa?

Vespa is commonly used for enterprise search, e-commerce ranking, content personalization, and similar applications requiring semantic similarity search.

Does Vespa integrate with popular AI tools?

Most vector databases integrate with LangChain, LlamaIndex, and popular embedding providers. Check the Vespa documentation for specific integration guides and examples.

Not sure if Vespa is right for you?

Compare it side-by-side with other vector databases to find the best fit for your project.