# Apache Solr vs Vespa

**Leader by vioscaleAI score:** Vespa

| Attribute | Apache Solr | Vespa |
|---|---|---|
| **vioscaleAI score** | 48.6 (34% (low)) | 58 (75% (high)) |
| activity.commits_last_30d | 100 | 100 |
| adoption.dependent_repos | 0 | 7 |
| adoption.github_stars | 1,685 | 7,129 |
| content.faq | `[{"answer":"Apache Solr is a server-based search platform built on Apache Lucene, enabling full-text, vector, and geospatial search through HTTP REST APIs. It supports distributed indexing, fault-tolerant replication, and near real-time query processing with multi-tenant support. It is indexed under Search Engines.","source":"https://solr.apache.org","question":"What is Apache Solr?","confidence":0.6},{"answer":"Apache Solr is open source, so it can be self-hosted and used at no licence cost. It is released under the Apache-2.0 licence. Pricing changes often, so verify at source before relying on it.","source":"https://solr.apache.org","question":"Is Apache Solr free to use?","confidence":0.6},{"answer":"Apache Solr supports Linux and a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://solr.apache.org","question":"What platforms does Apache Solr support?","confidence":0.6},{"answer":"Yes. Apache Solr can be deployed self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://solr.apache.org","question":"Can Apache Solr be self-hosted?","confidence":0.6},{"answer":"We have confirmed 10 integrations for Apache Solr, including Apache Lucene, Apache Zookeeper, Apache Tika, Docker, Kubernetes, Apache ManifoldCF, Apache Spark and Apache Nutch, plus 2 more. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://solr.apache.org","question":"What does Apache Solr integrate with?","confidence":0.6},{"answer":"Yes. Apache Solr is published under the Apache-2.0 licence, a permissive licence that generally allows commercial use and modification. Licence terms can change between releases, so verify against the repository for the version you intend to use.","source":"https://github.com/apache/solr","question":"Is Apache Solr open source?","confidence":0.95}]` | `[{"answer":"A distributed serving engine that unifies retrieval, ranking, machine learning inference, and real-time serving for business-critical AI applications. It is indexed under Search Engines.","source":"https://vespa.ai/pricing/","question":"What is Vespa?","confidence":0.6},{"answer":"Vespa offers a free tier, so you can start without paying. Pricing changes often, so verify at source before relying on it.","source":"https://vespa.ai/pricing/","question":"Is Vespa free?","confidence":0.6},{"answer":"Vespa supports the web and a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://vespa.ai/pricing/","question":"What platforms does Vespa support?","confidence":0.6},{"answer":"Yes. Vespa can be deployed cloud / SaaS, hybrid and self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://vespa.ai/pricing/","question":"Can Vespa be self-hosted?","confidence":0.6},{"answer":"We have confirmed 12 integrations for Vespa, including Python, Cohere, TwelveLabs, Claude Code, OpenAI Codex, Google Gemini, Cursor and VSCode, plus 4 more. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://vespa.ai/pricing/","question":"What does Vespa integrate with?","confidence":0.6},{"answer":"We have independently confirmed SOC 2 and GDPR for Vespa. Certifications we do not list are ones we have not been able to verify from public sources, which is not the same as Vespa not holding them. Always confirm compliance directly before you rely on it.","source":"https://trust.vespa.ai","question":"What security certifications does Vespa have?","confidence":0.7},{"answer":"Yes. Vespa is published under the Apache-2.0 licence, a permissive licence that generally allows commercial use and modification. Licence terms can change between releases, so verify against the repository for the version you intend to use.","source":"https://github.com/vespa-engine/vespa","question":"Is Vespa open source?","confidence":0.95},{"answer":"Vespa is available worldwide. The vendor is headquartered in Norway.","source":"https://vespa.ai/pricing/","question":"Where is Vespa available?","confidence":0.75}]` |
| deployment.options | `{"cloud":true,"self_hosted":true}` | `{"cloud":true,"hybrid":true,"self_hosted":true}` |
| description.long | Apache Solr is a distributed, open-source search engine providing scalable indexing and querying with support for full-text, vector, and geospatial search. It offers features like faceting, analytics, replication, and automated failover, with deployment options including containerization via Docker and Kubernetes. | A distributed search and AI platform that handles vectors, tensors, text, and structured data at scale, delivering sub-100ms query latency with continuous data updates and machine-learned relevance ranking. |
| features.capabilities | `{"faceting":"yes","query_dsl":"HTTP REST API with JSON/XML/CSV","deployment":"self_hosted","geo_search":true,"distributed":"clustered","index_engine":"lucene","licence_class":"permissive_oss","log_analytics":true,"multi_tenancy":true,"vector_search":"hybrid_fusion","realtime_indexing":"near_real_time"}` | `{"deployment":"self_hosted","distributed":"sharded","index_engine":"custom","licence_class":"permissive_oss","vector_search":"hybrid_fusion","typo_tolerance":"configurable","deployment_model":"hybrid","relevance_tuning":"ranking_rules","realtime_indexing":"near_real_time","generative_ai_answer_synthesis_rag":true,"multi_lingual_semantic_understanding":true,"hybrid_dense_and_sparse_lexical_reranking":true}` |
| integrations.count | 10 | 12 |
| integrations.list | `[{"name":"Apache Lucene"},{"name":"Apache Zookeeper"},{"name":"Apache Tika"},{"name":"Docker"},{"name":"Kubernetes"},{"name":"Apache ManifoldCF"},{"name":"Apache Spark"},{"name":"Apache Nutch"},{"name":"Apache Zeppelin"},{"name":"Apache OpenNLP"}]` | `[{"name":"Python"},{"name":"Cohere"},{"name":"TwelveLabs"},{"name":"Claude Code"},{"name":"OpenAI Codex"},{"name":"Google Gemini"},{"name":"Cursor"},{"name":"VSCode"},{"name":"IntelliJ"},{"name":"PyCharm"},{"name":"AWS"},{"name":"GCP"}]` |
| language.primary | Java | Java |
| license.spdx | Apache-2.0 | Apache-2.0 |
| market.availability | - | `{"hqCountry":"NO","primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | `{"mac":true,"web":true,"linux":true,"windows":true}` | `{"cli":true,"web":true}` |
| pricing | `{"type":"open_source","sourceUrl":"https://solr.apache.org","retrievedAt":"2026-10-13T15:11:24.445Z"}` | `{"type":"free","freeTier":true,"sourceUrl":"https://vespa.ai","retrievedAt":"2026-10-14T11:26:49.809Z"}` |
| pricing.free_tier | yes | yes |
| pricing.model | open_source | free |
| pricing.price_level | free | free |
| pricing.transparent | yes | no |
| release.cadence_days | - | 3 |
| release.history | - | `[{"url":"https://github.com/vespa-engine/vespa/releases/tag/lsp-v2.6.1","date":"2026-10-06T14:56:06Z","type":"stable","version":"lsp-v2.6.1"},{"url":"https://github.com/vespa-engine/vespa/releases/tag/v8.763.13","date":"2026-10-05T02:26:25Z","type":"stable","version":"v8.763.13"},{"url":"https://github.com/vespa-engine/vespa/releases/tag/v8.753.16","date":"2026-09-16T23:24:06Z","type":"stable","version":"v8.753.16"},{"url":"https://github.com/vespa-engine/vespa/releases/tag/lsp-v2.6.0","date":"2026-09-16T09:27:29Z","type":"stable","version":"lsp-v2.6.0"},{"url":"https://github.com/vespa-engine/vespa/releases/tag/v8.751.13","date":"2026-09-07T02:23:38Z","type":"stable","version":"v8.751.13"},{"url":"https://github.com/vespa-engine/vespa/releases/tag/v8.750.13","date":"2026-09-03T05:43:15Z","type":"stable","version":"v8.750.13"},{"url":"https://github.com/vespa-engine/vespa/releases/tag/v8.748.3","date":"2026-09-01T07:14:29Z","type":"stable","version":"v8.748.3"},{"url":"https://github.com/vespa-engine/vespa/releases/tag/v8.746.22","date":"2026-09-01T07:14:22Z","type":"stable","version":"v8.746.22"},{"url":"https://github.com/vespa-engine/vespa/releases/tag/lsp-v2.5.0","date":"2026-08-24T08:45:45Z","type":"stable","version":"lsp-v2.5.0"},{"url":"https://github.com/vespa-engine/vespa/releases/tag/v8.738.17","date":"2026-08-13T04:51:03Z","type":"stable","version":"v8.738.17"},{"url":"https://github.com/vespa-engine/vespa/releases/tag/v8.736.12","date":"2026-08-10T02:24:28Z","type":"stable","version":"v8.736.12"},{"url":"https://github.com/vespa-engine/vespa/releases/tag/v8.733.3","date":"2026-08-05T09:03:54Z","type":"stable","version":"v8.733.3"},{"url":"https://github.com/vespa-engine/vespa/releases/tag/v8.730.36","date":"2026-07-28T04:47:04Z","type":"stable","version":"v8.730.36"},{"url":"https://github.com/vespa-engine/vespa/releases/tag/v8.719.5","date":"2026-07-07T02:30:19Z","type":"stable","version":"v8.719.5"},{"url":"https://github.com/vespa-engine/vespa/releases/tag/v8.709.19","date":"2026-06-18T18:42:59Z","type":"stable","version":"v8.709.19"},{"url":"https://github.com/vespa-engine/vespa/releases/tag/v8.708.30","date":"2026-06-18T04:26:19Z","type":"stable","version":"v8.708.30"},{"url":"https://github.com/vespa-engine/vespa/releases/tag/v8.707.16","date":"2026-06-16T14:15:49Z","type":"stable","version":"v8.707.16"},{"url":"https://github.com/vespa-engine/vespa/releases/tag/v8.703.17","date":"2026-06-09T16:31:53Z","type":"stable","version":"v8.703.17"},{"url":"https://github.com/vespa-engine/vespa/releases/tag/v8.702.91","date":"2026-06-09T02:20:48Z","type":"stable","version":"v8.702.91"},{"url":"https://github.com/vespa-engine/vespa/releases/tag/lsp-v2.4.10","date":"2026-06-08T04:18:37Z","type":"stable","version":"lsp-v2.4.10"}]` |
| reliability.status_page | - | yes |
| security.disclosure_policy | yes | yes |
| security.gdpr | - | yes |
| security.scorecard | - | 5.9 |
| security.soc2 | - | yes |
| security.trust_center | https://solr.apache.org/security.html | - |
| security.vulnerabilities | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=go&package_name=github.com%2Fapache%2Fsolr&per_page=100","last_12m":0,"max_severity":null}` | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=maven&package_name=com.yahoo.vespa%3Acontainer-test&per_page=100","last_12m":0,"max_severity":null}` |

## Capabilities (Search Engines)

| Capability | Apache Solr | Vespa |
|---|:--:|:--:|
| **Deployment** |  |  |
| Deployment | Self-hosted | Self-hosted |
| **Architecture** |  |  |
| Index engine | Lucene | Custom |
| **Query** |  |  |
| Query DSL (JSON / SQL / params / GraphQL) | HTTP REST API with JSON/XML/CSV | - |
| Faceting & filtering | Yes | - |
| Geo search | ✓ | - |
| **Relevance** |  |  |
| Typo tolerance / fuzzy | - | Configurable |
| Relevance tuning | - | Ranking rules |
| **Vector** |  |  |
| Vector / hybrid search | Dense + lexical fusion | Dense + lexical fusion |
| **Scale** |  |  |
| Distributed / horizontal scale | Clustered | Sharded |
| Multi-tenancy (indexes / collections / tenants) | ✓ | - |
| **Ingest** |  |  |
| Real-time indexing | Near-real-time | Near-real-time |
| **Workload** |  |  |
| Log / analytics workload | ✓ | - |
| **Licensing** |  |  |
| Licence class | Permissive OSS | Permissive OSS |

*Source: vioscaleAI. Generated 2026-10-16T20:14:39.878Z. "-" = undocumented, not absent.*