Tencent Cloud VectorDB
Tencent Cloud VectorDB is a cloud-managed distributed database for storing, indexing, retrieving, and managing multidimensional embedding vectors.
What Tencent Cloud VectorDB is
Tencent Cloud VectorDB is a cloud-managed distributed database for storing, indexing, retrieving, and managing multidimensional embedding vectors. It is available through API, Linux, and web access, with Python, Java, and Go SDKs. Tencent says one index can hold up to hundreds of billions of vectors, support million-level QPS, and return queries with millisecond latency. Its RAG suite combines document parsing, information enrichment, vectorization, and retrieval, allowing uploaded documents to become a knowledge base. Text embedding can run during insertion, updates, and similarity searches, with usage billed by token volume. Search supports dense and sparse vectors, metadata filtering, and hybrid retrieval with RRF or weighted result merging. Standard indexes include FLAT, HNSW, and IVF families; capacity-enhanced deployments add DISK_FLAT from version 3.0. Tencent lists LLM knowledge bases, recommendation systems, and text or image retrieval as use cases, with RAG examples using DeepSeek, Hunyuan, and Baichuan.
Good
- Supports dense, sparse, and hybrid vector search
- RAG suite builds knowledge bases from documents
- Python, Java, and Go SDKs available
- Metadata filtering is supported
- Free one-month test instance available
Watch out
- Embedding usage is billed by token volume
- Free test instance is limited to one month
- AI Suite similarity search accepts one text input
Who it suits
It suits teams building vector-powered applications, including LLM knowledge bases, recommendation systems, and text or image retrieval. Developers can use the documented SDKs, APIs, and cloud deployment.
Verdict
Tencent Cloud VectorDB combines managed vector storage with indexing, hybrid search, embedding, and document-focused RAG tools. Its multiple index families, SDKs, and listed high-scale targets make it suited to application back ends, while usage limits and paid continuation matter for planning.
Plans and prices
From Tencent Cloud VectorDB's own pricing page, checked 9 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| 高可用版(存储型) | $584 a month | 广州 · 1核 CPU · 8G 内存 · 20G 磁盘 · 2节点 · 200万向量(768维) · 584元/月 |
| 高可用版(标准型) | $872 a month | 广州 · 2核 CPU · 8G 内存 · 20GB 磁盘 · 2节点 · 200万向量(768维) · 872元/月 |
| 高可用版(计算型) | $1,256 a month | 广州 · 4核 CPU · 8G 内存 · 20GB 磁盘 · 2节点 · 200万向量(768维) · 1256元/月 |
The facts
Each one read from Tencent Cloud VectorDB's own pages, with the date it was checked.
What it does
- Availability
- Tencent states an availability SLA of at least 99.97% for three-availability-zone high-availability deployments and 99.95% for two-zone deployments.checked 9 Oct 2026
- Embedding
- Embedding can automatically convert input text into vectors during insertion, updates, and similarity searches; usage is billed by token volume.checked 9 Oct 2026
- Hybrid search
- Hybrid search combines dense and sparse vector retrieval and supports RRF and weighted result merging.checked 9 Oct 2026
- Indexes
- The standard edition supports FLAT, HNSW, and IVF index families, while the capacity-enhanced edition supports DISK_FLAT disk indexes from version 3.0.checked 9 Oct 2026
- Limits
- The AI suite documentation says AI Suite similarity search accepts only one text input at a time, while regular vector or Embedding searches can accept up to 20 inputs.checked 9 Oct 2026
- Model integrations
- Tencent documents RAG examples using VectorDB with DeepSeek, Hunyuan, and Baichuan models.checked 9 Oct 2026
- Product
- Tencent Cloud VectorDB is a fully managed, self-developed distributed database for storing, indexing, retrieving, and managing multidimensional embedding vectors.checked 9 Oct 2026
- RAG suite
- Its AI suite combines document parsing, information enrichment, vectorization, and retrieval so users can upload source documents to build a knowledge base.checked 9 Oct 2026
- Scale
- The product page states that one index supports up to hundreds of billions of vectors, with up to million-level QPS and millisecond query latency.checked 9 Oct 2026
- SDKs
- Tencent provides Python, Java, and Go SDKs, and its connection guide specifies minimum versions of Python 3.6, Java 8, and Go 1.15.checked 9 Oct 2026
- Security
- The product documentation describes account and API-key authentication, VPC isolation, security-group traffic controls, and CAM-based resource permissions.checked 9 Oct 2026
- Support
- Tencent directs product questions to online customer service or support tickets and also points users to its developer community.checked 9 Oct 2026
- Use cases
- Tencent lists LLM knowledge bases, recommendation systems, and text or image retrieval as application scenarios.checked 9 Oct 2026
Money
- Free test instance
- Tencent describes a free test instance deployed on one node in one availability zone, limited to one month; continued use requires purchasing another instance.checked 9 Oct 2026
Alternatives to Tencent Cloud VectorDB
- 1

Chroma
Free planOpen sourceAndroidiOSWebAPI8.6From $250 a month - 2

Vespa
Open sourceWebAPILinuxmacOS8.4 - 3

Pinecone
Free planWebAPILinuxmacOS7.8From $20 a month - 4
Weaviate
Free planWebAPILinuxSelf-hosted7.0$45 usage-based - 5

Qdrant
Free planWebAPILinuxmacOS6.9Free plan - 6

Elasticsearch
WebAPILinuxSelf-hosted6.7From $99 a month
