Vespa

aid: vespa-ai
name: Vespa
description: Vespa is an open-source AI search engine, big-data serving engine, and vector database originally developed inside
  Yahoo and spun out as Vespa.ai AS. Vespa combines vector search, text search (BM25), structured filtering, and machine-learned
  ranking — including native tensor inference — into a single distributed serving engine that scales to billions of documents
  with sub-100ms latency. Vespa Cloud is the fully managed commercial offering operated by the Vespa.ai team across AWS and
  GCP, with Startup, Basic, Commercial, and Enterprise plans plus a Self-Managed option for customers running the open-source
  engine on their own infrastructure. Vespa is widely used at Spotify, Perplexity, Yahoo, Farfetch, and Elicit for search,
  recommendation, personalization, and Retrieval-Augmented Generation (RAG).
type: Index
deliveryModel:
  model: unknown
  open_source: unknown
  commercial: true
  callable_host: true
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - openapi
  - pricing
  - repository-unlicensed
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-09-03'
  method: derived
position: Producing
access: 3rd-Party
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/vespa-ai.png
tags:
- Artificial Intelligence
- Search
- Vector Database
- Big Data
- Machine-Learning
- Semantic Search
- Retrieval Augmented Generation
- Open-Source
- Tensor
- Recommendations
tags_raw:
- AI
- Search
- Vector Database
- Big Data
- Machine Learning
- Semantic Search
- Retrieval Augmented Generation
- Open Source
- Tensor
- Recommendations
url: https://raw.githubusercontent.com/api-evangelist/vespa-ai/refs/heads/main/apis.yml
created: '2026-05-25'
modified: '2026-09-13'
specificationVersion: '0.23'
apis:
- aid: vespa-ai:vespa-deploy-api
  name: Vespa Deploy API
  description: The Vespa Deploy API (/application/v2) manages application packages on a Vespa configuration server. It supports
    preparing, activating, and tearing down application packages, session-based deployments, schema validation, and zero-downtime
    updates of services, schemas, and rank profiles.
  humanURL: https://docs.vespa.ai/en/reference/deploy-rest-api-v2.html
  tags:
  - Deployment
  - Configuration
  - Application
  - DevOps
  properties:
  - url: https://docs.vespa.ai/en/reference/deploy-rest-api-v2.html
    type: Documentation
  - url: https://docs.vespa.ai/en/application-packages.html
    type: Documentation
- aid: vespa-ai:vespa-tenant-api
  name: Vespa Tenant and Application API
  description: The Vespa Tenant API (/application/v2/tenant) manages tenants and applications hosted on a Vespa configuration
    server or Vespa Cloud control plane. It exposes operations for creating tenants, listing applications, and binding application
    sessions to a tenant.
  humanURL: https://docs.vespa.ai/en/reference/application-v2-tenant.html
  tags:
  - Tenants
  - Application
  - Multi-Tenancy
  - Administration
  tags_raw:
  - Tenants
  - Applications
  - Multi-Tenancy
  - Administration
  properties:
  - url: https://docs.vespa.ai/en/reference/application-v2-tenant.html
    type: Documentation
- aid: vespa-ai:vespa-config-api
  name: Vespa Config API
  description: The Vespa Config API (/config/v2) lets services in a Vespa application retrieve their configuration from a
    Vespa configuration server using the config-server / config-proxy protocol. It is primarily used by Vespa services and
    tooling rather than end users, but is documented as a stable HTTP API.
  humanURL: https://docs.vespa.ai/en/reference/config-rest-api-v2.html
  tags:
  - Configuration
  - Internal
  properties:
  - url: https://docs.vespa.ai/en/reference/config-rest-api-v2.html
    type: Documentation
- aid: vespa-ai:vespa-cluster-api
  name: Vespa Cluster Controller API
  description: The Vespa Cluster Controller API (/cluster/v2) exposes runtime state and management endpoints for a Vespa content
    cluster — including node state queries, maintenance-mode transitions, and storage cluster orchestration.
  humanURL: https://docs.vespa.ai/en/reference/cluster-v2.html
  tags:
  - Cluster
  - Content
  - States
  tags_raw:
  - Cluster
  - Operations
  - Content
  - State
  properties:
  - url: https://docs.vespa.ai/en/reference/cluster-v2.html
    type: Documentation
- aid: vespa-ai:vespa-state-api
  name: Vespa State API
  description: The Vespa State API (/state/v1) exposes per-service health, version, and metrics endpoints for any Vespa node
    — used by orchestration tooling, monitoring agents, and load balancers to check liveness, readiness, and runtime metrics.
  humanURL: https://docs.vespa.ai/en/reference/state-v1.html
  tags:
  - Health
  - Monitoring
  - Metrics
  - Observability
  properties:
  - url: https://docs.vespa.ai/en/reference/state-v1.html
    type: Documentation
- aid: vespa-ai:vespa-metrics-api
  name: Vespa Metrics API
  description: Vespa exposes a family of metrics endpoints (/metrics/v1, /metrics/v2, /prometheus/v1) that publish Vespa engine
    and application metrics in JSON or Prometheus exposition format for scraping by Prometheus, Grafana, or other observability
    stacks.
  humanURL: https://docs.vespa.ai/en/operations/metrics.html
  tags:
  - Metrics
  - Prometheus
  - Observability
  - Monitoring
  properties:
  - url: https://docs.vespa.ai/en/operations/metrics.html
    type: Documentation
  - url: https://docs.vespa.ai/en/reference/metrics-v1.html
    type: Documentation
  - url: https://docs.vespa.ai/en/reference/metrics-v2.html
    type: Documentation
  - url: https://docs.vespa.ai/en/reference/prometheus-v1.html
    type: Documentation
- aid: vespa-ai:vespa-ai-query-api
  name: Vespa Query API
  description: The Query API from Vespa — 1 operation(s) for query.
  humanURL: https://docs.vespa.ai/en/query-api.html
  tags:
  - Query
  properties:
  - type: OpenAPI
    url: openapi/vespa-ai-query-api-openapi.yml
  - type: Documentation
    url: https://docs.vespa.ai/en/query-api.html
  - type: Documentation
    url: https://docs.vespa.ai/en/reference/api/query.html
  - type: GettingStarted
    url: https://docs.vespa.ai/en/getting-started.html
- aid: vespa-ai:vespa-ai-documents-api
  name: Vespa Documents API
  description: Single-document GET, POST, PUT, DELETE operations
  humanURL: https://docs.vespa.ai/en/reference/document-v1-api-reference.html
  tags:
  - Documents
  properties:
  - type: OpenAPI
    url: openapi/vespa-ai-documents-api-openapi.yml
  - type: Documentation
    url: https://docs.vespa.ai/en/reference/document-v1-api-reference.html
  - type: Documentation
    url: https://docs.vespa.ai/en/writing/document-v1-api-guide.html
  - type: Documentation
    url: https://docs.vespa.ai/en/reads-and-writes.html
- aid: vespa-ai:vespa-ai-visit-api
  name: Vespa Visit API
  description: Bulk visit (iteration) operations
  humanURL: https://docs.vespa.ai/en/reference/document-v1-api-reference.html
  tags:
  - Visit
  properties:
  - type: OpenAPI
    url: openapi/vespa-ai-visit-api-openapi.yml
  - type: Documentation
    url: https://docs.vespa.ai/en/reference/document-v1-api-reference.html
  - type: Documentation
    url: https://docs.vespa.ai/en/writing/document-v1-api-guide.html
  - type: Documentation
    url: https://docs.vespa.ai/en/reads-and-writes.html
common:
- type: SecurityPolicy
  url: https://github.com/vespa-engine/vespa/blob/master/SECURITY.md
- type: ContributionGuide
  url: https://github.com/vespa-engine/vespa/blob/master/CONTRIBUTING.md
- type: PostmanWorkspace
  url: https://www.postman.com/kinlaneapi/vespa/overview
- type: AgenticAccess
  url: agentic-access/vespa-ai-agentic-access.yml
- type: VulnerabilityDisclosure
  url: security/vespa-ai-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/vespa-ai-domain-security.yml
- type: Authentication
  url: authentication/vespa-ai-authentication.yml
- type: Website
  url: https://vespa.ai
- type: Documentation
  url: https://docs.vespa.ai/
- type: GettingStarted
  url: https://docs.vespa.ai/en/getting-started.html
- type: Tutorials
  url: https://docs.vespa.ai/en/learn/tutorials/
- type: GitHubOrganization
  url: https://github.com/vespa-engine
- type: GitHubRepository
  url: https://github.com/vespa-engine/vespa
- type: License
  url: https://github.com/vespa-engine/vespa/blob/master/LICENSE
- type: Blog
  url: https://blog.vespa.ai/
- type: BlogRSS
  url: https://blog.vespa.ai/feed.xml
- type: Pricing
  url: https://cloud.vespa.ai/pricing
- type: Console
  url: https://console.vespa-cloud.com/
- type: Slack
  url: https://slack.vespa.ai/
- type: Support
  url: https://github.com/vespa-engine/vespa/issues
- type: ChangeLog
  url: https://github.com/vespa-engine/vespa/releases
- type: SDKs
  name: Vespa CLI (Go)
  url: https://github.com/vespa-engine/vespa/tree/master/client/go
- type: SDKs
  name: pyvespa (Python)
  url: https://github.com/vespa-engine/pyvespa
- type: SDKs
  name: pyvespa Documentation
  url: https://vespa-engine.github.io/pyvespa/
- type: SDKs
  name: vespa-feed-client (Java)
  url: https://github.com/vespa-engine/vespa/tree/master/vespa-feed-client
- type: SDKs
  name: vespa-search (JavaScript)
  url: https://github.com/vespa-engine/vespa-search
- type: SampleApps
  url: https://github.com/vespa-engine/sample-apps
- type: PrometheusExporter
  url: https://github.com/vespa-engine/vespa_exporter
- type: DockerImage
  url: https://github.com/vespa-engine/docker-image
- type: GitHubAction
  url: https://github.com/vespa-engine/setup-vespa-cli-action
- type: SpectralRules
  url: rules/vespa-ai-rules.yml
- type: Vocabulary
  url: vocabulary/vespa-ai-vocabulary.yml
- type: JSONLDContext
  url: json-ld/vespa-ai-context.jsonld
- type: Plans
  url: plans/vespa-ai-plans-pricing.yml
- type: RateLimits
  url: rate-limits/vespa-ai-rate-limits.yml
- type: FinOps
  url: finops/vespa-ai-finops.yml
- type: Features
  data:
  - Open-source under Apache 2.0
  - Vector search with HNSW indexes
  - BM25 text search and hybrid search
  - Native tensor and ML model inference at serving time
  - YQL (Vespa Query Language) for structured queries
  - Multi-phase ranking (match-phase, first-phase, second-phase, global-phase)
  - Document API with conditional writes, visits, and JSON Lines streaming
  - Multi-tenant namespaces and document groups
  - Real-time indexing with sub-100ms query latency
  - Distributed content clusters with automatic sharding and replication
  - Streaming search mode for personal/private corpora
  - Built-in machine learning inference (TensorFlow, ONNX, XGBoost, LightGBM)
  - Approximate nearest neighbor and exact nearest neighbor operators
  - Application packages with schemas, services.xml, and rank profiles
  - Container API for custom searchers, document processors, and handlers
  - Self-managed (Apache 2.0) or fully managed Vespa Cloud (AWS, GCP)
  - Vespa Cloud Startup plan from $0.05 / vCPU-hour, $0.005 / GiB-memory-hour
  - Vespa Cloud Commercial plan with 24/7 1-hour SLA support
  - Vespa Cloud Enterprise plan with $20k/month minimum and 15-minute SLA
  - Up to 50% volume discounts and 15% committed-spend discount
  sources:
  - https://cloud.vespa.ai/price-calculator.html
  - https://docs.vespa.ai/
  updated: '2026-05-25'
- type: UseCases
  data:
  - name: Hybrid Search
    description: Combine BM25 text relevance with vector similarity and structured filters in a single query executed by Vespa's
      multi-phase ranking pipeline.
  - name: Retrieval Augmented Generation
    description: Serve grounded context to large language models by indexing documents, chunks, and embeddings in Vespa and
      retrieving them with hybrid search at sub-100ms latency.
  - name: Recommendation and Personalization
    description: Power recommendation systems with machine-learned ranking, real-time feature updates, and tensor inference
      over user and item embeddings.
  - name: Ad Targeting and Real-Time Bidding
    description: Match candidate ads against user context and serve ranked impressions within tight latency budgets using
      Vespa's distributed serving engine.
  - name: E-Commerce Search and Browse
    description: Combine faceted navigation, structured filters, text relevance, and learned ranking for large product catalogs
      with frequent updates.
  - name: Streaming Search for Personal Data
    description: Run "streaming search" mode that scans a user's personal corpus on demand — ideal for mail, messaging, and
      document search where each user has their own private index.
- type: Integrations
  data:
  - name: AWS
  - name: Google Cloud
  - name: Prometheus
  - name: Grafana
  - name: TensorFlow
  - name: ONNX Runtime
  - name: XGBoost
  - name: LightGBM
  - name: Kubernetes
  - name: LangChain
  - name: LlamaIndex
  - name: Haystack
- type: LinkedIn
  url: https://www.linkedin.com/company/vespa-ai
- type: Portal
  url: https://docs.vespa.ai/
- type: SourceCode
  url: https://github.com/vespa-engine/vespa
- type: CommercialOffering
  title: Vespa Cloud
  url: https://cloud.vespa.ai/
- type: LlmsText
  url: https://docs.vespa.ai/llms.txt
- name: MCP Documentation
  url: https://blog.vespa.ai/public-mcp-interns/
  type: MCPDocumentation
integrations:
- name: AWS
- name: Google Cloud
- name: LangChain
- name: LlamaIndex
- name: Haystack
- name: Prometheus
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
x-merged-from:
- vespa