Head to head
Supabase Vector (pgvector) vs Weaviate Cloud
As a vector database API, Supabase Vector (pgvector) rates higher on the APIbenchmarks Index, 85.2 to 79.6, a 5.6-point gap. Here is how they compare on each criterion.
Criterion by criterion
| Criterion | Supabase Vector (pgvector) | Weaviate Cloud |
|---|---|---|
| Documentation & DX | ||
| Reliability | ||
| Ecosystem & SDKs | ||
| Accessibility | ||
| APIbenchmarks Index | 85.2 | 79.6 |
Specifications
| Supabase Vector (pgvector) | Weaviate Cloud | |
|---|---|---|
| Best for | Postgres-native embeddings, no separate service | Hybrid search + AI-native query agents |
| Free tier | Free project: 500MB DB, pgvector included | 14-day sandbox only (auto-expires), no permanent free |
| Pricing | Bundled in Postgres plan (storage-based) | Usage-based (dimensions + storage) |
| Official SDKs | 7 languages | 7 languages |
Is Supabase Vector (pgvector) better than Weaviate Cloud?
On the APIbenchmarks Index, Supabase Vector (pgvector) rates higher (85.2 vs 79.6). It leads on the four weighted criteria, but price is reported separately, so the best choice still depends on your budget.
Verdict in one line
Supabase Vector (pgvector) leads by 5.6 points (85.2 vs 79.6) and wins 3 of 4 criteria.
Winner by criterion
| Criterion | Winner | ||
|---|---|---|---|
| Documentation & DX | 86 | 84 | |
| Reliability | 80 | 80 | Tie |
| Ecosystem & SDKs | 84 | 80 | |
| Accessibility | 92 | 72 |
Choose Supabase Vector (pgvector) if… / choose Weaviate Cloud if…
- →documentation & dx matters most to you (86 vs 84)
- →ecosystem & sdks matters most to you (84 vs 80)
- →accessibility matters most to you (92 vs 72)
- →your use case matches its focus: postgres-native embeddings, no separate service
- →your use case matches its focus: hybrid search + ai-native query agents
Pricing side by side
- Model
- Bundled in Postgres plan (storage-based)
- Free tier
- Free project: 500MB DB, pgvector included
- Free$0/mo
- Pro$25/mo per org
- Team$599/mo per org
- EnterpriseCustom
- Model
- Usage-based (dimensions + storage)
- Free tier
- 14-day sandbox only (auto-expires), no permanent free
- Free / Sandbox$0
- Flexfrom $45/mo
- Premium (Shared)from $400/mo
- Premium Dedicatedfrom $400/mo
- Enterprise / BYOCCustom
Vendor-published pricing, verified 2026-06-27 (Supabase Vector (pgvector)) and 2026-06-27 (Weaviate Cloud).
SDK and language coverage
Both · 1
Python (supabase-py)
Only Supabase Vector (pgvector) · 6
TypeScript / JavaScriptvecs (Python vector client)SwiftKotlinDart / FlutterSQL (native pgvector operators)
Only Weaviate Cloud · 6
JavaScript / TypeScript (v3 client)GoJava (v6 client)GraphQL APIREST APIgRPC API
Strengths and weaknesses
- +Embeddings live in the same Postgres as relational data, no separate vector service to provision or keep in sync
- +Combine vector similarity with SQL WHERE filters, joins, and row-level security in a single query
- +HNSW indexing (pgvector 0.5.0+) reaches accuracy@10 of 0.99 at 1M vectors and beat Qdrant on equivalent compute in Supabase's benchmarks
- –HNSW index builds are memory-bound and can take hours on a 10M-row, 1536-dim table, producing tens-of-GB indexes
- –Good query latency requires the index to fit in RAM, pushing you to larger, costlier compute add-ons
- –Performance degrades and p99 tail latency grows beyond roughly 5–50M vectors on a single node, not ideal for billion-scale search
- +Native hybrid search (HNSW vector + BM25 keyword) with a single query, a standout vs index-only competitors
- +Strong, transparent published ANN benchmarks (e.g. 98.35% recall@10 at ~10,940 QPS on SIFT1M)
- +Built-in vectorizer and generative modules (OpenAI, Cohere, Hugging Face) plus bundled Weaviate Embeddings and Agents
- –Managed cost scales steeply, tens of millions of high-dimensional vectors can run into thousands of dollars per month
- –Pricing model is hard to estimate; metering jargon (vector dimensions, AIUs) makes budgeting difficult, a frequent Reddit/G2 complaint
- –Advanced operations (sharding, schema design, replication tuning) have a steep learning curve for beginners
Supabase Vector (pgvector) vs Weaviate Cloud: questions
- Which has better documentation, Supabase Vector (pgvector) or Weaviate Cloud?
- Supabase Vector (pgvector) scores higher on documentation and developer experience: 86 vs 84 out of 100.
- Which is more reliable, Supabase Vector (pgvector) or Weaviate Cloud?
- Supabase Vector (pgvector) and Weaviate Cloud score the same on reliability (80).
- Do Supabase Vector (pgvector) and Weaviate Cloud have a free tier?
- Supabase Vector (pgvector): yes (Free project: 500MB DB, pgvector included). Weaviate Cloud: yes (14-day sandbox only (auto-expires), no permanent free).
- How are Supabase Vector (pgvector) and Weaviate Cloud priced?
- Supabase Vector (pgvector): Bundled in Postgres plan (storage-based). Weaviate Cloud: Usage-based (dimensions + storage).
- Which has more official SDKs?
- Both list 7 official SDKs.
Other Vector Database comparisons
Pinecone vs Supabase Vector (pgvector)Pinecone vs Weaviate CloudMongoDB Atlas Vector Search vs Supabase Vector (pgvector)MongoDB Atlas Vector Search vs Weaviate CloudSupabase Vector (pgvector) vs Zilliz Cloud (Milvus)Weaviate Cloud vs Zilliz Cloud (Milvus)Qdrant Cloud vs Supabase Vector (pgvector)Supabase Vector (pgvector) vs Turbopuffer