Comparison

Chroma vs txtai

No clear leader: Chroma (67.6) and txtai (62.9) 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.

Chroma full profile →txtai full profile →

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Chroma68

txtai63

Attribute comparison across 2 tools
Attribute	Chroma	txtai
Vioscale score	68 / 100medium · 70%	63 / 100medium · 56%
Pricing
Free tierpricing.free_tier	✓	✓
Modelpricing.model	commercial	open_source
Price levelpricing.price_level	low	free
Transparentpricing.transparent	✓	✓
Integrations
Countintegrations.count	-	10
Security
Gdprsecurity.gdpr	✓	-
Scorecardsecurity.scorecard	5.1	4.9
Soc2security.soc2	✓	-
Vulnerabilitiessecurity.vulnerabilities	Count: 4 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=chromadb&per_page=100 · Last 12m: 4 · Max severity: CRITICAL	Count: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=txtai&per_page=100 · Last 12m: 0
Reliability
Status pagereliability.status_page	✓	✓
Adoption
Dependent reposadoption.dependent_repos	6,246	14
Github starsadoption.github_stars	29,148	12,909
Package downloads weeklyadoption.package_downloads_weekly	2,592,643	-
Activity
Commits last 30dactivity.commits_last_30d	81	70
Release
Cadence daysrelease.cadence_days	4	26
Historyrelease.history	20 items	20 items
License
Spdxlicense.spdx	Apache-2.0	Apache-2.0
Language
Primarylanguage.primary	Rust	Python
Market
Availabilitymarket.availability	Available worldwide · Popular in US · HQ US	-

Score

Vioscale score

Chroma68 / 100medium · 70%

txtai63 / 100medium · 56%

Pricing

Free tier

Chroma✓

txtai✓

Model

Chromacommercial

txtaiopen_source

Price level

Chromalow

txtaifree

Transparent

Chroma✓

txtai✓

Integrations

Count

Chroma–

txtai10

Security

Gdpr

Chroma✓

txtai–

Scorecard

Chroma5.1

txtai4.9

Soc2

Chroma✓

txtai–

Vulnerabilities

ChromaCount: 4 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=chromadb&per_page=100 · Last 12m: 4 · Max severity: CRITICAL

txtaiCount: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=txtai&per_page=100 · Last 12m: 0

Reliability

Status page

Chroma✓

txtai✓

Adoption

Dependent repos

Chroma6,246

txtai14

Github stars

Chroma29,148

txtai12,909

Package downloads weekly

Chroma2,592,643

txtai–

Activity

Commits last 30d

Chroma81

txtai70

Release

Cadence days

Chroma4

txtai26

History

Chroma20 items

txtai20 items

License

Spdx

ChromaApache-2.0

txtaiApache-2.0

Language

Primary

ChromaRust

txtaiPython

Market

Availability

ChromaAvailable worldwide · Popular in US · HQ US

txtai–

Capabilities

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

Capability comparison for Vector Databases
Capability	Chroma	txtai
Deployment
Deployment	Self-hosted	Embedded
Serverless / consumption pricing	✓	-
Index
ANN index (HNSW / IVF / DiskANN / ScaNN / flat)	-	HNSW, IVF, IVFSparse, milvus-lite, turbovec, zvec
Distance metrics (cosine / dot / Euclidean)	-	cosine
Query
Metadata filtering	Pre-filter	Pre-filter
Hybrid search (dense + sparse fusion)	✓	✓
Built-in BM25 / lexical	✓	✓
Storage
Quantization	-	Scalar
On-disk vs in-memory	Tiered	Disk-backed
Scale
Multi-tenancy (namespaces / collections / tenants)	✓	✓
Horizontal scale	Sharded / distributed	Sharded / distributed
Consistency
Consistency	-	Tunable
Licensing
Licence class	Permissive OSS	Permissive OSS
Classification
Purpose-built vs feature-of-parent	Dedicated DBMS	Dedicated DBMS

Deployment

ChromaSelf-hosted

txtaiEmbedded

Serverless / consumption pricing

Chroma✓

txtai-

Index

ANN index (HNSW / IVF / DiskANN / ScaNN / flat)

Chroma-

txtaiHNSW, IVF, IVFSparse, milvus-lite, turbovec, zvec

Distance metrics (cosine / dot / Euclidean)

Chroma-

txtaicosine

Query

Metadata filtering

ChromaPre-filter

txtaiPre-filter

Hybrid search (dense + sparse fusion)

Chroma✓

txtai✓

Built-in BM25 / lexical

Chroma✓

txtai✓

Storage

Quantization

Chroma-

txtaiScalar

On-disk vs in-memory

ChromaTiered

txtaiDisk-backed

Scale

Multi-tenancy (namespaces / collections / tenants)

Chroma✓

txtai✓

Horizontal scale

ChromaSharded / distributed

txtaiSharded / distributed

Consistency

Chroma-

txtaiTunable

Licensing

Licence class

ChromaPermissive OSS

txtaiPermissive OSS

Classification

Purpose-built vs feature-of-parent

ChromaDedicated DBMS

txtaiDedicated DBMS

What each one is

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

Chroma

A search system enabling simultaneous vector similarity, full-text, and structured metadata queries across large datasets. Deployable as open-source self-hosted infrastructure or managed cloud service with usage-based pricing, supporting multi-tenant workloads and distributed scaling.

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.

Chroma

from $0.01/moHybridFree tier

Freemium model with usage-based metering. Starter plan free with $5 credits; Team plan $250/month plus metered charges with $100 included credits; Enterprise with custom pricing.

StarterFree
- 10 databases
- 10 team members
- Community Slack
Team$250/month with $100 included credits, plus overage metering
- 100 databases
- 30 team members
- Slack support
- SOC II compliance
- Volume-based discounts
EnterpriseContact sales
- Unlimited databases
- Unlimited team members
- Dedicated support
- Single tenant clusters
- BYOC clusters
- +1 more

as of 2026-08-14verify ↗

txtai

Open sourceFree tier

as of 2026-08-21verify ↗

Platform & deployment

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

Platform and deployment support comparison
Supports	Chroma	txtai
WebPlatforms	✓	✓
CLIPlatforms	✓	✓
Cloud / SaaSDeployment	✓	✓
Self-hostedDeployment	✓	✓
HybridDeployment	✓	✗

Platforms

Web

Chroma✓

txtai✓

CLI

Chroma✓

txtai✓

Deployment

Cloud / SaaS

Chroma✓

txtai✓

Self-hosted

Chroma✓

txtai✓

Hybrid

Chroma✓

txtai✗

Integrations

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

Chroma

Not documented yet.

txtai

11 total

llama.cpp
LiteLLM
Hugging Face
OpenAI
Claude
AWS Bedrock
smolagents
OpenCode
DuckDB
Milvus
LiteRT

Independently observed

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