# KDB.AI vs Weaviate

**Leader by Vioscale score:** Weaviate

| Attribute | KDB.AI | Weaviate |
|---|---|---|
| **Vioscale score** | 41.9 (24% (low)) | 63.7 (75% (high)) |
| activity.commits_last_30d | - | 100 |
| adoption.dependent_repos | - | 15 |
| adoption.github_stars | - | 16,753 |
| deployment.options | `{"cloud":true,"self_hosted":true}` | `{"cloud":true,"self_hosted":true}` |
| description.long | A vector database for contextual and time series search that enables building AI apps, finding patterns in data, and mixing structured with unstructured data. | Weaviate is an open-source vector database that supports hybrid search, metadata filtering, and scalable deployments. It enables developers to build AI applications with semantic search capabilities. |
| features.capabilities | `{"deployment":"managed","hybrid_search":true,"multi_tenancy":true,"product_class":"dedicated_dbms","full_text_bm25":true,"horizontal_scale":"sharded_distributed","metadata_filtering":"pre_filter"}` | `{"ann_index":"HNSW","deployment":"self_hosted","quantization":"product","hybrid_search":true,"licence_class":"permissive_oss","multi_tenancy":true,"product_class":"dedicated_dbms","full_text_bm25":true,"horizontal_scale":"sharded_distributed"}` |
| integrations.count | 2 | 25 |
| integrations.list | `[{"name":"Hugging Face"},{"name":"NVIDIA cuVS"}]` | - |
| language.primary | - | Go |
| license.spdx | - | BSD-3-Clause |
| market.availability | - | `{"hqCountry":"NL","primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | - | `{"cli":true,"web":true}` |
| pricing | `{"type":"hybrid","plans":[{"free":true,"name":"Free","contactSales":false}],"summary":"Free tier available; enterprise pricing via contact sales","freeTier":true,"sourceUrl":"https://kdb.ai","retrievedAt":"2026-08-03T13:11:39.515Z"}` | `{"type":"hybrid","freeTier":true,"sourceUrl":"https://weaviate.io","retrievedAt":"2026-08-05T13:28:29.566Z"}` |
| pricing.free_tier | yes | yes |
| pricing.model | commercial | freemium |
| pricing.price_level | low | low |
| pricing.transparent | no | no |
| release.cadence_days | - | 1 |
| release.history | - | `[{"url":"https://github.com/weaviate/weaviate/releases/tag/v1.39.2","date":"2026-08-26T17:21:38Z","type":"stable","version":"v1.39.2"},{"url":"https://github.com/weaviate/weaviate/releases/tag/v1.38.12","date":"2026-08-25T12:21:22Z","type":"stable","version":"v1.38.12"},{"url":"https://github.com/weaviate/weaviate/releases/tag/v1.39.1","date":"2026-08-25T08:35:33Z","type":"stable","version":"v1.39.1"},{"url":"https://github.com/weaviate/weaviate/releases/tag/v1.38.11","date":"2026-08-20T12:55:59Z","type":"stable","version":"v1.38.11"},{"url":"https://github.com/weaviate/weaviate/releases/tag/v1.38.10","date":"2026-08-18T07:42:19Z","type":"stable","version":"v1.38.10"},{"url":"https://github.com/weaviate/weaviate/releases/tag/v1.38.9","date":"2026-08-06T13:57:10Z","type":"stable","version":"v1.38.9"},{"url":"https://github.com/weaviate/weaviate/releases/tag/v1.39.0","date":"2026-08-04T11:42:14Z","type":"stable","version":"v1.39.0"},{"url":"https://github.com/weaviate/weaviate/releases/tag/v1.38.8","date":"2026-07-29T16:57:51Z","type":"stable","version":"v1.38.8"},{"url":"https://github.com/weaviate/weaviate/releases/tag/v1.39.0-rc.1","date":"2026-07-29T08:46:24Z","type":"prerelease","version":"v1.39.0-rc.1"},{"url":"https://github.com/weaviate/weaviate/releases/tag/v1.38.7","date":"2026-07-27T14:39:51Z","type":"stable","version":"v1.38.7"},{"url":"https://github.com/weaviate/weaviate/releases/tag/v1.37.14","date":"2026-07-27T14:38:00Z","type":"stable","version":"v1.37.14"},{"url":"https://github.com/weaviate/weaviate/releases/tag/v1.39.0-rc.0","date":"2026-07-23T07:48:02Z","type":"prerelease","version":"v1.39.0-rc.0"},{"url":"https://github.com/weaviate/weaviate/releases/tag/v1.38.6","date":"2026-07-21T07:01:35Z","type":"stable","version":"v1.38.6"},{"url":"https://github.com/weaviate/weaviate/releases/tag/v1.36.23","date":"2026-07-20T08:00:41Z","type":"stable","version":"v1.36.23"},{"url":"https://github.com/weaviate/weaviate/releases/tag/v1.38.5","date":"2026-07-16T18:45:15Z","type":"stable","version":"v1.38.5"},{"url":"https://github.com/weaviate/weaviate/releases/tag/v1.37.13","date":"2026-07-17T07:15:24Z","type":"stable","version":"v1.37.13"},{"url":"https://github.com/weaviate/weaviate/releases/tag/v1.36.22","date":"2026-07-15T15:42:20Z","type":"stable","version":"v1.36.22"},{"url":"https://github.com/weaviate/weaviate/releases/tag/v1.38.4","date":"2026-07-15T05:52:19Z","type":"stable","version":"v1.38.4"},{"url":"https://github.com/weaviate/weaviate/releases/tag/v1.38.3","date":"2026-07-10T07:12:44Z","type":"stable","version":"v1.38.3"},{"url":"https://github.com/weaviate/weaviate/releases/tag/v1.37.12","date":"2026-07-08T15:23:00Z","type":"stable","version":"v1.37.12"}]` |
| reliability.sla_pct | - | 99.95 |
| reliability.status_page | - | yes |
| security.disclosure_policy | yes | yes |
| security.gdpr | - | yes |
| security.hipaa | - | yes |
| security.scorecard | - | 6.7 |
| security.soc2 | - | yes |
| security.vulnerabilities | - | `{"count":5,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=go&package_name=github.com%2Fweaviate%2Fweaviate&per_page=100","last_12m":3,"max_severity":"HIGH"}` |

## Capabilities (Vector Databases)

| Capability | KDB.AI | Weaviate |
|---|:--:|:--:|
| **Deployment** |  |  |
| Deployment | Managed | Self-hosted |
| Serverless / consumption pricing | - | - |
| **Index** |  |  |
| ANN index (HNSW / IVF / DiskANN / ScaNN / flat) | - | HNSW |
| Distance metrics (cosine / dot / Euclidean) | - | - |
| **Query** |  |  |
| Metadata filtering | Pre-filter | - |
| Hybrid search (dense + sparse fusion) | ✓ | ✓ |
| Built-in BM25 / lexical | ✓ | ✓ |
| **Storage** |  |  |
| Quantization | - | Product |
| On-disk vs in-memory | - | - |
| **Scale** |  |  |
| Multi-tenancy (namespaces / collections / tenants) | ✓ | ✓ |
| Horizontal scale | Sharded / distributed | Sharded / distributed |
| **Consistency** |  |  |
| Consistency | - | - |
| **Licensing** |  |  |
| Licence class | - | Permissive OSS |
| **Classification** |  |  |
| Purpose-built vs feature-of-parent | Dedicated DBMS | Dedicated DBMS |

*Source: Vioscale. Generated 2026-09-01T15:18:30.871Z. "-" = undocumented, not absent.*