Approximate nearest neighbors
Use an approximate vector index; recall and latency are not measured.
Yes Documented within scope Partial Limited form of the feature No Explicit evidence of absence Unknown No evidence recorded. These are support assessments, not quality scores or runtime verification.
| Product | Support | Implementation & evidence | Screenshots |
|---|---|---|---|
| P+PostgreSQL + pgvectorComposition | Yes | Provides HNSW and IVFFlat approximate indexes. Documented for this target; no runtime tests recorded. | |
| NPNeon PostgresManaged service | Yes | Supports HNSW and IVFFlat through pgvector. Documented for this target; no runtime tests recorded. | |
| MAMongoDB AtlasManaged service | Yes | Supports approximate and exact vector search. Documented for this target; no runtime tests recorded. | |
| PPostgreSQLEngine | Unknown | No evidence recorded. This does not mean unsupported. | |
| SSQLiteEngine | Unknown | No evidence recorded. This does not mean unsupported. | |
| MCMongoDB CommunityEngine | Unknown | No evidence recorded. This does not mean unsupported. | |
| QQdrantEngine | Unknown | No evidence recorded. This does not mean unsupported. | |
| CDCloudflare D1Managed service | Unknown | No evidence recorded. This does not mean unsupported. | |
| DODurable Objects + SQLiteComposition | Unknown | No evidence recorded. This does not mean unsupported. | |
| PPineconeManaged service | Unknown | No evidence recorded. This does not mean unsupported. |