Vespa
Free tierAI Search Platform for large-scale vector search, ranking, and real-time inference
Free tier available·Technical·API available·Open source
Key strengths
Vector, text and structured searchDistributed machine-learned rankingUnbeatable performanceInfinite automated scalabilityContinuous deployment & upgradesFully managed, with strong security
Free tier + paid plans
Oslo, Norway
Founded 2017
Self-hostable
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Vespa.ai is open source and self-hostable, giving engineering teams full control over deployment. It supports a free tier for getting started, and scales automatically in distributed environments — no manual resharding required. Key technical capabilities include:
- Hybrid search: Vector, text, and structured search unified in a single query
- Distributed machine-learned ranking: Run ML models directly at serving time, close to the data
- Continuous deployment & upgrades: Push schema and model changes without downtime
- Infinite automated scalability: The platform rebalances data automatically as nodes are added or removed
- Fully managed option: Available with strong security guarantees
- Integrations: AWS, Slack
Vespa is well-suited for RAG pipelines, semantic search, and real-time recommendation systems where latency and throughput are critical.
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