What Vespa does
Vespa is an open-source serving engine and managed cloud for combining structured retrieval, vector search, ranking models, recommendations, and real-time updates at scale.
Vespa is a serving platform rather than a ready-made chatbot. It is strongest when an application must update data continuously and combine filters, text search, nearest-neighbor retrieval, business rules, and learned ranking within one request path.
The software is open source. Vespa Cloud prices allocated vCPU, memory, disk, and GPU memory by plan, with support and minimum-spend differences; trial and tenant quotas limit possible allocation. Self-hosting avoids the managed fee but transfers patching, availability, encryption, networking, and operational work to the team.
Vespa Cloud documents mTLS, role controls, audit data, tenant isolation, and encryption at rest. Self-managed documentation warns that internal protocols are not safe on untrusted networks by default. Operators must isolate hosts, configure TLS and request filters, protect files and keys, and validate ranking and model behavior.
How Vespa works
Developers define document schemas, indexing, retrieval, ranking expressions, and service topology in a versioned application package. They feed documents and tensors to content nodes; stateless containers parse queries, retrieve candidates, execute ranking stages or model inference, and return structured results. Vespa Cloud provisions and updates the nodes, while self-managed teams operate them. Application owners still secure endpoints, evaluate relevance and models, bound resources, and review user-facing results.
How to set up Vespa
Model the application
Define document schemas, update rate, query types, filters, vector fields, ranking stages, latency, availability, and retention.
Choose hosted or self-managed
Compare Cloud plans, regions, support, quota, and resource pricing with the security and operations burden of running Vespa yourself.
Build an application package
Version schemas, services, components, ranking expressions, models, tests, and deployment settings together.
Load and test data
Feed an authorized representative corpus and evaluate recall, relevance, latency, memory, updates, failures, and cost under realistic traffic.
Secure production
Configure authenticated TLS endpoints, roles, secrets, network isolation, limits, monitoring, backup strategy, safe deployment tests, and rollback.
Vespa FAQs
Is Vespa a vector database?
It supports vector search, but also structured retrieval, text search, real-time indexing, ranking expressions, model inference, recommendations, and serving topology.
Is Vespa free?
The software is open source. Vespa Cloud and the infrastructure, operations, support, and data transfer around any deployment have costs.
How does Vespa Cloud charge?
Current pricing is based on allocated vCPU, memory, disk, and GPU memory, with plan-specific rates, support, discounts, quotas, and some minimum commitments.
Is self-hosted Vespa secure by default?
Not for exposure to untrusted networks. Official guidance requires network isolation plus explicit TLS, authentication or request filters, file permissions, and other controls.
Does Vespa judge result quality automatically?
No. Teams must build relevance judgments, offline tests, online experiments, monitoring, and human review appropriate to the application.
Listing reviewed 2026-08-05. Product details and pricing can change; verify important terms on the provider's website.
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