Weaviate
Hybrid Search 2.0 with learned ranking. BM25 + vector in unified index.
Active · Verified 2026-10-26 · fresh as of 2026-10-26 · 59 cited facts, 6 with a third-party source · 1 recorded change · Suggest a correction
At a glance
- Type
- Hybrid vector DB + learned ranking vendor fix
- Tier
- T1
- Section
- Vector-database infrastructure
- Latest release
- v1.40.2 (2026-10-21) repo fix
- License
- BSD-3-Clause repo fix
- Pricing
- Free cluster $0 (100k objects, 1 GB RAM, 10 GB disk); Flex pay-as-you-go from $45/mo; Premium prepaid via sales; OSS free vendor fix
- Funding
- $68M total $200M val Series B · 2023-04 third-party fix
- Freshness
- 2026-10-26 fix
- Layer
- model-infra repo fix
- SDK languages
- csharp, go, java, python, rest, typescript vendor fix
- Protocols
- mcp-server vendor fix
- Developer activity
- OpenRank 35.54 (12-mo avg 38.66) · 66 participants — 2026-09 third-party fix
When to use
Optimised for: low-latency similarity search + scale
Anti-fit: not for relational / graph-heavy queries (vector-first by design)
Pros & cons
Pros
OSS-first managed and self-hosted vector DB with native hybrid (vector + keyword) and module ecosystem (Q&A, summarization, classification).
Cons
Module surface area can lead to feature drift; smaller enterprise sales presence than Pinecone.
Claims & capabilities
Made 2024 Forbes AI 50 List alongside OpenAI/Cohere/HuggingFace/Mistral/LangChain; combines vector search with knowledge-graph-style schema for contextual enrichment; not consistently top in pure-vector benchmarks but strong on hybrid use cases; emerged 2019
Technical surface
- API surface
- REST, GraphQL, gRPC, SDK: Python, JS/TS, Go, Java
- Backend storage
- custom (LSM-backed vector + inverted index)
- Deployment
- Both (self-hosted + managed cloud) — OSS (Docker/K8s); Weaviate Cloud shared (Free/Flex) and dedicated (Premium)
- Embedding model
- multiple supported
- Multi-tenancy
- Tenant-per-collection (multi-tenancy feature) gives logical isolation without separate clusters; Dedicated Cloud option for hard isolation
- MCP
- yes — official MCP server built into Weaviate since v1.38 (Streamable HTTP at /v1/mcp)
- A2A
- no Google A2A (Agent2Agent) integration documented as of 2026-05.
- OpenTelemetry
- first-class — Prometheus + OTel
Compare Weaviate with…
Alternatives to Weaviate → live options ranked by shared design, licence, hosting and MCP support
Similar systems
Other vector-database infrastructure in the catalog, ranked by inbound references.
- Qdrant T1
Distribution-Based Score Fusion + RRF. Sparse vectors native; filtering via ANN graph modification.
- Chroma T1
Limited native hybrid (users build RRF custom). Fast Rust core (v2.5). Acquired by Replit (definitive agreement announced 2026-10-23); Chroma Cloud is winding down (writes disabled 2026-11-22, reads disabled 2026-12-22) while open-source ChromaDB continues under Apache-2.0.
- pgvector T1
Stores embeddings alongside relational + full-text data. HNSW + IVFFlat ANN indexes. Used as agent conversation memory via LangChain + MCP. Foundation of Supabase AI and many self-hosted RAG stacks.
- Milvus T1
Multi-vector columns (10 simultaneous). Native hybrid search (v2.5). CAGRA + Vamana GPU/CPU (v2.6).
- Pinecone T1
Managed vector DB. Cascading sparse + dense + rerank pipeline; pinecone-rerank-v0 .
- MongoDB Atlas Vector Search T1
Agent memory store for both short-term (document) and long-term (vector). LangGraph checkpointer for stateful agents. Vector search extended to Community Edition (Sept 2025).
Sources (58 cited facts, 6 third-party)
Each fact links to the page it came from; the badge says who published it (how to read sources).
- What it is Hybrid vector DB + learned ranking vendor
- What it does & what's distinct Hybrid Search 2.0 with learned ranking. BM25 + vector in unified index. vendor
- Claims / benefits Made 2024 Forbes AI 50 List alongside OpenAI/Cohere/HuggingFace/Mistral/LangChain; combi… third-party
- Modalities text vendor
- Created 2016-03 repo
- Latest release v1.40.2 (2026-10-21) repo
- License BSD-3-Clause repo
- GitHub weaviate/weaviate — ~16.8k stars, last commit 2026-10 repo
- Mindshare 1 inbound 241 HN · 2 press third-party
- Funding $68M total $200M val Series B · 2023-04 third-party
- Customers / scale $12M ARR 51-200 ppl Stack AI vendor
- Pricing Free cluster $0 (100k objects, 1 GB RAM, 10 GB disk); Flex pay-as-you-go from $45/mo; Pr… vendor
- Compliance SOC 2 Type II, HIPAA (AWS Enterprise Cloud), ISO 27001 vendor
- Data handling Never trains on customer data (customer is sole data controller per GDPR; no training co… vendor
- Deployment Both (self-hosted + managed cloud) — OSS (Docker/K8s); Weaviate Cloud shared (Free/Flex)… vendor
- HQ NL third-party
- Founders / pedigree SemVentures / Index Ventures; co-founders Bob van Luijt (CEO; ArtEZ music degree; Berkle… third-party
- Memory volume / scale no scale claim vendor
- Performance ANN-Benchmarks: 13k QPS at recall 0.95 on SIFT-1M (HNSW, single node); 1B-vector cluster… vendor
- API surface REST, GraphQL, gRPC, SDK: Python, JS/TS, Go, Java vendor
- Backend storage custom (LSM-backed vector + inverted index) vendor
- Multi-tenancy Tenant-per-collection (multi-tenancy feature) gives logical isolation without separate c… vendor
- Encryption AES-256 at rest (incl. internal Kubernetes traffic), TLS/mTLS in transit; SOC 2 (>18 mon… vendor
- SSO / RBAC SSO + RBAC vendor
- Embedding model multiple supported vendor
- Consistency eventual vendor
- Versioning none vendor
- Tombstoning soft-delete only vendor
- Schema evolution schema with migration vendor
- Namespace primitives per-tenant vendor
- Contradiction handling always overwrite (last-write-wins) vendor
- Forgetting policy user-controlled forget vendor
- MCP support yes — official MCP server built into Weaviate since v1.38 (Streamable HTTP at /v1/mcp) vendor
- OTel first-class — Prometheus + OTel vendor
- Import / export JSON / Parquet via batch + REST; backup/restore vendor
- Runtimes Python, TypeScript/JavaScript, Go, Java, C# vendor
- Validated verticals RAG developers, agent builders (broad horizontal); financial-services, healthcare, legal… vendor
- Time to running <10min (managed cloud) to <1hr (self-host Docker) vendor
- Anti-fit not for relational / graph-heavy queries (vector-first by design) vendor
- Optimised for low-latency similarity search + scale vendor
- Adjacent infrastructure BYO embedding model + LLM; this IS the vector store vendor
- Pros OSS-first managed and self-hosted vector DB with native hybrid (vector + keyword) and mo… vendor
- Cons Module surface area can lead to feature drift; smaller enterprise sales presence than Pi… vendor
- Project & sources weaviate.io GitHub weaviate/weaviate vendor
- commit-trajectory [{"ym":"2026-03","cum":24600},{"ym":"2026-04","cum":25034},{"ym":"2026-05","cum":25309}] repo
- cost-input-usd-per-mtok 0 vendor
- cost-output-usd-per-mtok 0 vendor
- cost-tier free vendor
- cost-pricing-model free-tier vendor
- cost-last-verified 2026-06-29 vendor
- architecture-deployment-locus hybrid vendor
- licensing-bucket open-core vendor
- positioning-platform-vs-product platform vendor
- taxonomy-three-layer-rollup model-infra repo
- developer-activity-opendigger {"activity":303.02,"as_of":"2026-09","openrank_12mo":38.66,"openrank_current":35.54,"par… third-party
- compliance-certifications hipaa vendor
- sdk-languages csharp,go,java,python,rest,typescript vendor
- protocol-support mcp-server vendor
What changed
Changes to this record's lifecycle, licence, release, pricing and hosting facts, from the catalog's git history. Subscribe (Atom)
- 2026-10-26
- Latest release “v1.37.2 2026-04-23” → “v1.40.2 (2026-10-21)” source
- Pricing “Free + paid” → “Free cluster $0 (100k objects, 1 GB RAM, 10 GB disk); Flex pay-as-you-go from $45/mo; Premium prepaid via sales; OSS free” source
- Deployment “Both” → “Both (self-hosted + managed cloud) — OSS (Docker/K8s); Weaviate Cloud shared (Free/Flex) and dedicated (Premium)” source
- MCP support “via official adapter — weaviate-mcp” → “yes — official MCP server built into Weaviate since v1.38 (Streamable HTTP at /v1/mcp)” source
Related systems
References (28)
- Anthropic Claude (foundation models) integrates with — Weaviate's integrations / model-provider docs list Anthropic Claude (foundation models) as an integration. (verified 2026-10-29)
- Anyscale integrates with — Weaviate's integrations / model-provider docs list Anyscale as an integration. (verified 2026-10-29)
- Arize Phoenix integrates with — Weaviate's integrations / model-provider docs list Arize Phoenix as an integration. (verified 2026-10-29)
- Cohere Command R+ / Command A integrates with — Weaviate's integrations / model-provider docs list Cohere Command R+ / Command A as an integration. (verified 2026-10-29)
- Comet ML integrates with — Weaviate's integrations / model-provider docs list Comet ML as an integration. (verified 2026-10-29)
- Composio integrates with — Weaviate's integrations / model-provider docs list Composio as an integration. (verified 2026-10-29)
- Confident AI / DeepEval integrates with — Weaviate's integrations / model-provider docs list Confident AI / DeepEval as an integration. (verified 2026-10-29)
- CrewAI integrates with — Weaviate's integrations / model-provider docs list CrewAI as an integration. (verified 2026-10-29)
- DeepSeek R1 / V3 family integrates with — Weaviate's integrations / model-provider docs list DeepSeek R1 / V3 family as an integration. (verified 2026-10-29)
- DSPy integrates with — Weaviate's integrations / model-provider docs list DSPy as an integration. (verified 2026-10-29)
- Haystack (framework) integrates with — Weaviate's integrations / model-provider docs list Haystack (framework) as an integration. (verified 2026-10-29)
- Hugging Face Inference API (Embeddings) integrates with — Weaviate has a Hugging Face model-provider integration that calls the Hugging Face Inference API for embeddings. (verified 2026-10-29)
- Jina AI Embeddings integrates with — Weaviate's integrations / model-provider docs list Jina AI Embeddings as an integration. (verified 2026-10-29)
- LangChain (framework) integrates with — Weaviate's integrations / model-provider docs list LangChain (framework) as an integration. (verified 2026-10-29)
- LlamaIndex (framework) integrates with — Weaviate's integrations / model-provider docs list LlamaIndex (framework) as an integration. (verified 2026-10-29)
- Mem0 integrates with — Weaviate's integrations / model-provider docs list Mem0 as an integration. (verified 2026-10-29)
- Microsoft Semantic Kernel integrates with — Weaviate's integrations / model-provider docs list Microsoft Semantic Kernel as an integration. (verified 2026-10-29)
- Mistral Large 2 / Mixtral family integrates with — Weaviate's integrations / model-provider docs list Mistral Large 2 / Mixtral family as an integration. (verified 2026-10-29)
- n8n (AI agent flows) integrates with — Weaviate's integrations / model-provider docs list n8n (AI agent flows) as an integration. (verified 2026-10-29)
- OpenAI GPT family (GPT-5 / GPT-4o / o3 / o4) integrates with — Weaviate's integrations / model-provider docs list OpenAI GPT family (GPT-5 / GPT-4o / o3 / o4) as an integration. (verified 2026-10-29)
- Patronus AI integrates with — Weaviate's integrations / model-provider docs list Patronus AI as an integration. (verified 2026-10-29)
- Phidata (now Agno) integrates with — Weaviate's integrations / model-provider docs list Phidata as an integration. (verified 2026-10-29)
- Ragas integrates with — Weaviate's integrations / model-provider docs list Ragas as an integration. (verified 2026-10-29)
- Replicate integrates with — Weaviate's integrations / model-provider docs list Replicate as an integration. (verified 2026-10-29)
- TruLens integrates with — Weaviate's integrations / model-provider docs list TruLens as an integration. (verified 2026-10-29)
- Voyage AI (MongoDB) integrates with — Weaviate's integrations / model-provider docs list Voyage AI (MongoDB) as an integration. (verified 2026-10-29)
- Weights & Biases integrates with — Weaviate's integrations / model-provider docs list Weights & Biases as an integration. (verified 2026-10-29)
- xAI Grok 4 integrates with — Weaviate's integrations / model-provider docs list xAI Grok 4 as an integration. (verified 2026-10-29)
Referenced by (17)
- Agno (Phidata) Memory integrates with — Single-line integrations with LanceDB, Pinecone, Weaviate, Qdrant.
- Arcade.dev integrates with — Arcade docs have a Weaviate integration page. (verified 2026-10-29)
- Bifrost (Maxim AI) integrates with — Bifrost docs have a Weaviate vector-database integration page for semantic caching. (verified 2026-10-29)
- Cohere Embed integrates with — Cohere docs "Integrating Embedding Models with Other Tools": Weaviate and Cohere guide. (verified 2026-10-29)
- CrewAI integrates with — CrewAI docs have a Weaviate vector search tool page. (verified 2026-10-29)
- Dify integrates with — Dify self-host VECTOR_STORE supports `weaviate` as the knowledge-base vector store. (verified 2026-10-29)
- DSPy integrates with — DSPy ships a Weaviate retriever module (dspy/retrievers/weaviate_rm.py). (verified 2026-10-29)
- Haystack (framework) integrates with — Haystack integrations directory has a Weaviate integration page ("Use a Weaviate database with Haystack"). (verified 2026-10-29)
- LangChain (framework) integrates with — LangChain docs have a Weaviate integration provider page (Open-source vector database with GraphQL). (verified 2026-10-29)
- Langflow integrates with — Langflow components bundle: Weaviate vector store component. (verified 2026-10-29)
- LlamaIndex (framework) integrates with — LlamaIndex has an official vector store integration package llama-index-vector-stores-weaviate in its repo. (verified 2026-10-29)
- Mastra integrates with — Mastra repo ships the @mastra/weaviate vector store package. (verified 2026-10-29)
- Mem0 integrates with — Mem0 docs have a Weaviate vector store page for Mem0 open source. (verified 2026-10-29)
- Microsoft Semantic Kernel integrates with — Semantic Kernel docs list an out-of-the-box Weaviate vector store connector. (verified 2026-10-29)
- n8n (AI agent flows) integrates with — n8n built-in AI cluster node: Weaviate Vector Store node. (verified 2026-10-29)
- OpenLLMetry (Traceloop) integrates with — OpenLLMetry's What's Supported page lists Weaviate as instrumented out of the box. (verified 2026-10-29)
- Phidata (now Agno) integrates with — Agno ships a weaviate vector DB integration module (agno.vectordb.weaviate). (verified 2026-10-29)