Comparison

Milvus vs txtai

No clear leader: txtai (61.2) and Milvus (57.2) are within the 5-point margin; treat as a tie. The attribute-by-attribute breakdown below, with a source and date on every value, is the honest way to compare them.

Machine formatsMarkdownJSONGraphQLMarkdown is open. JSON and GraphQL need a free key.
Milvus57
txtai61
Score
vioscaleAI score
Milvus57 / 100medium · 57%
txtai61 / 100medium · 56%
Pricing
Free tier
Milvus✓
txtai✓
Model
Price level
Milvusfree
txtaifree
Transparent
Milvus✗
txtai✓
Integrations
Count
Milvus2
txtai5
Reliability
Status page
Milvus–
txtai✓
Adoption
Dependent repos
Milvus7
txtai14
Github stars
Milvus46,375
txtai13,018
Activity
Commits last 30d
Milvus100
txtai100
Release
Cadence days
Milvus7
txtai27
History
Milvus20 items
License
Spdx
Language
Primary
MilvusGo
txtaiPython
Content
Faq
Milvus6 items
txtai6 items

Capabilities

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

Deployment
Deployment
MilvusSelf-hosted
txtaiEmbedded
Serverless / consumption pricing
Milvus✓
txtai-
Index
ANN index (HNSW / IVF / DiskANN / ScaNN / flat)
MilvusHNSW, IVF, FLAT, SCANN, DiskANN, GPU_CAGRA
txtaiHNSW, IVF, IVFSparse, milvus-lite, turbovec, zvec
Distance metrics (cosine / dot / Euclidean)
Milvuscosine, Euclidean, dot product
txtaicosine
Query
Metadata filtering
MilvusPre-filter
txtaiPre-filter
Hybrid search (dense + sparse fusion)
Milvus✓
txtai✓
Built-in BM25 / lexical
Milvus✓
txtai✓
Storage
Quantization
MilvusProduct
txtaiScalar
On-disk vs in-memory
MilvusDisk-backed
txtaiDisk-backed
Scale
Multi-tenancy (namespaces / collections / tenants)
Milvus✓
txtai✓
Horizontal scale
MilvusSharded / distributed
txtaiSharded / distributed
Consistency
Consistency
MilvusEventual
txtaiTunable
Licensing
Licence class
MilvusPermissive OSS
txtaiPermissive OSS
Classification
Purpose-built vs feature-of-parent
MilvusDedicated DBMS
txtaiDedicated DBMS

What each one is

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

Milvus

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

txtai

txtai is an open-source Python framework for building semantic search applications, LLM-powered agents, retrieval augmented generation systems, and language model workflows with support for multiple vector backends and integration with various LLMs.

Independently observed

Pricing

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

Milvus

Open sourceFree tier
as of verify ↗

txtai

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
Milvus✓
txtai✓
Linux
Milvus✓
txtai✗
CLI
Milvus✓
txtai✓
Deployment
Cloud / SaaS
Milvus✓
txtai✗
Self-hosted
Milvus✓
txtai✓

Integrations

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

In common (1)
  • OpenAI

Milvus

8 total - 7 not shared
  • Sentence Transformers
  • BGE-M3
  • SPLADE
  • Jina AI
  • BM25
  • PyMilvus
  • Jina
Independently observed

txtai

12 total - 11 not shared
  • llama.cpp
  • LiteLLM
  • Hugging Face
  • Claude
  • AWS Bedrock
  • smolagents
  • OpenCode
  • DuckDB
  • Milvus
  • LiteRT
  • Model Context Protocol
Independently observed
Still deciding?

Milvus or txtai: 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.