Are there any open source alternatives to Pinecone that offer similar performance for semantic search without the heavy cloud hosting bills at the end of the month?
Download run
Fan-out diagram
The searches the AI actually ran for this prompt.
SEED QUERY
Are there any open source alternatives to Pinecone that offer similar performance for semantic search without the heavy cloud hosting bills at the end of the month?
3 real searches · 1 real-search pass
open source self hosted vector database alternatives Pinecone Qdrant Milvus Weaviate pgvector performance benchmark 2026Google ↗
OBSERVEDComparison
Qdrant documentation self hosted deployment pricing open source vector searchGoogle ↗
OBSERVEDComparison
pgvector documentation HNSW IVFFlat indexing performanceGoogle ↗
OBSERVEDReason
Badge and edge weight = share of passes that produced the query. Hover a query for its intent and routing format.
Query classes
Google's semantic query class for every sub-query: what kind of answer each search is after, simulated vs real.
ChatGPT real searches (3)
Classes come from the query-classifier (a local Laya model). 2 of 3 calls are low-confidence (under 50%) — hover a query in the table to see its confidence.
Searches and sources
ChatGPT3 real searches · gpt-6
open source self hosted vector database alternatives Pinecone Qdrant Milvus Weaviate pgvector performance benchmark 2026 Google ↗
Qdrant documentation self hosted deployment pricing open source vector search Google ↗
pgvector documentation HNSW IVFFlat indexing performance Google ↗
- Website · qdrant.tech
- GitHub · github.com
- Website · milvus.io
- GitHub · github.com
- GitHub · github.com
- Website · weaviate.io
- GitHub · github.com
- Website · trychroma.com
- GitHub · github.com
- Vector Database Benchmark: 7 Open-Source Engines for RAG · aimultiple.com
- 9 Best Open Source Vector Databases in 2026 (Tested) · geekflare.com
Queries
3 queries · click a column to sort
| Query / type | Search | Intent | Query class | Routing format | Cluster | Freq ↓ | Weight |
|---|---|---|---|---|---|---|---|
open source self hosted vector database alternatives Pinecone Qdrant Milvus Weaviate pgvector performance benchmark 2026 OBSERVED | Google ↗ AI Mode ↗ | — | Comparison | — | — | 1x of 1 | |
Qdrant documentation self hosted deployment pricing open source vector search OBSERVED | Google ↗ AI Mode ↗ | — | Comparison | — | — | 1x of 1 | |
pgvector documentation HNSW IVFFlat indexing performance OBSERVED | Google ↗ AI Mode ↗ | — | Reason | — | — | 1x of 1 |