Why Weaviate matters
Weaviate is one of the most widely deployed open source vector databases and a common retrieval layer for enterprise RAG systems. It raised a $50 million Series B led by Index Ventures in April 2023. In June 2026 Ricoh's corporate venture fund invested, with the company reporting more than 1,000 paying customers and a developer community above 40,000.
The numberReported more than 1,000 paying customers when Ricoh's venture fund invested in June 2026
On The All Things AI 100
Listed under Data and infrastructure. Databases, data pipelines, and the plumbing under AI applications.
Quick answers
- What does Weaviate do?
- Open source vector database and hosted cloud for semantic search, RAG and agent memory. Weaviate is one of the most widely deployed open source vector databases and a common retrieval layer for enterprise RAG systems.
- What AI capabilities does Weaviate offer?
- Weaviate offers an open source vector database and Weaviate Cloud so businesses can store embeddings and run semantic, keyword, and hybrid search. Teams use it to ground chat and retrieval augmented generation, apply metadata filters, and retain agent memory. Weaviate Agents cover query, transformation, and personalization tasks that search collections, enrich records, and recommend items from the same data.
- Why is Weaviate on The All Things AI 100?
- Weaviate is listed under Data and infrastructure. Databases, data pipelines, and the plumbing under AI applications. Reported more than 1,000 paying customers when Ricoh's venture fund invested in June 2026.
- Where is Weaviate based, and who owns it?
- Weaviate is based in Amsterdam, Netherlands, was founded in 2019 and is private, venture-backed.