Comparison

KDB.AI vs Milvus

On the evidence we track, Milvus leads this comparison with a composite score of 57/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

Machine formatsMarkdownJSONGraphQLMarkdown is open. JSON and GraphQL need a free key.
KDB.AI47
★Milvus57
Score
vioscaleAI score
KDB.AI47 / 100low · 24%
Milvus57 / 100medium · 57%
Pricing
Free tier
KDB.AI✓
Milvus✓
Model
Price level
KDB.AIlow
Milvusfree
Transparent
KDB.AI✗
Milvus✗
Integrations
Count
KDB.AI5
Milvus2
Adoption
Dependent repos
KDB.AI–
Milvus7
Github stars
KDB.AI–
Milvus46,375
Activity
Commits last 30d
KDB.AI–
Milvus100
Release
Cadence days
KDB.AI–
Milvus7
History
KDB.AI–
Milvus20 items
License
Spdx
KDB.AI–
Language
Primary
KDB.AI–
MilvusGo
Content
Faq
KDB.AI4 items
Milvus6 items

Capabilities

Feature-by-feature on the axes that matter for vector databases. “-” means undocumented, not absent.

Deployment
Deployment
KDB.AIManaged
MilvusSelf-hosted
Serverless / consumption pricing
KDB.AI-
Milvus✓
Index
ANN index (HNSW / IVF / DiskANN / ScaNN / flat)
KDB.AIFlat, qFlat, IVF, IVFPQ, HNSW, qHnsw
MilvusHNSW, IVF, FLAT, SCANN, DiskANN, GPU_CAGRA
Distance metrics (cosine / dot / Euclidean)
KDB.AIEuclidean, Inner-Product, Cosine
Milvuscosine, Euclidean, dot product
Query
Metadata filtering
KDB.AIPre-filter
MilvusPre-filter
Hybrid search (dense + sparse fusion)
KDB.AI✓
Milvus✓
Built-in BM25 / lexical
KDB.AI✓
Milvus✓
Storage
Quantization
KDB.AIProduct
MilvusProduct
On-disk vs in-memory
KDB.AIDisk-backed
MilvusDisk-backed
Scale
Multi-tenancy (namespaces / collections / tenants)
KDB.AI✓
Milvus✓
Horizontal scale
KDB.AISharded / distributed
MilvusSharded / distributed
Consistency
Consistency
KDB.AI-
MilvusEventual
Licensing
Licence class
KDB.AI-
MilvusPermissive OSS
Classification
Purpose-built vs feature-of-parent
KDB.AIDedicated DBMS
MilvusDedicated DBMS

What each one is

The product in its own terms, so the numbers below have context.

KDB.AI

KDB.AI is a specialized vector database enabling developers to build AI-powered applications by integrating vector embeddings with structured time-series data. It supports hybrid search, multimodal retrieval, and real-time analytics for generative AI and RAG applications.

Independently observed

Milvus

Leader

A high-performance, distributed vector database that enables fast similarity search across billions of high-dimensional vectors, supporting real-time updates, flexible metadata filtering, and hybrid search capabilities for AI and machine learning applications.

Independently observed

Pricing

List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.

KDB.AI

HybridFree tier

Free tier available; enterprise pricing via contact sales

  • FreeFree
as of verify ↗

Milvus

Leader
Open sourceFree tier
as of verify ↗

Platform & deployment

Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.

Platforms
Web
KDB.AI–
Milvus✓
Linux
KDB.AI–
Milvus✓
CLI
KDB.AI–
Milvus✓
Deployment
Cloud / SaaS
KDB.AI✓
Milvus✓
Self-hosted
KDB.AI✗
Milvus✓
On-premise
KDB.AI✓
Milvus✗

Integrations

What each product connects to. Counts come from the vendor's own integration directory where one exists.

KDB.AI

8 total
  • Hugging Face
  • NVIDIA cuVS
  • LlamaIndex
  • Langchain
  • Voyage AI
  • TwelveLabs
  • Google Colab
  • HuggingFace
Independently observed

Milvus

Leader
8 total
  • OpenAI
  • Sentence Transformers
  • BGE-M3
  • SPLADE
  • Jina AI
  • BM25
  • PyMilvus
  • Jina
Independently observed
Still deciding?

KDB.AI or Milvus: which one depends on you

A composite score cannot know your constraints. Describe them and both get re-weighted against what you actually need, with the evidence behind every position.

Free to run, no account needed to start. How the evaluation works

Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.