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Chroma

An Apache 2.0 licensed search engine for AI applications, built on object storage, with an embedded local mode and a hosted cloud service.

Free to self-host under Apache 2.0. Chroma Cloud is usage-based across writes, storage, queries, and data returned, with starter credits, a paid tier adding a monthly platform fee on top of usage, and enterprise terms quoted by sales. Open source Named by Claude in 1 list this week

How Claude rates Chroma.

Each score below is the model's own, on the rubric it wrote for that list, from what it already knows about Chroma. Nothing here is edited by us.

The best vector databases for RAG

#9 this week, scoring 7.0 out of 10. Best for Developers prototyping RAG applications or building smaller-scale production systems with Python-first workflows.

Query performance 6
Adequate for small to medium datasets but not optimized for high-performance requirements at large scale.
Ease of deployment 9
Incredibly simple to get started with pip install and intuitive API, perfect for development and small deployments.
Metadata filtering 6
Basic metadata filtering works but lacks the sophistication and performance of more mature solutions.
Scalability & cost 6
Works well for smaller datasets but scaling characteristics and cost efficiency are less proven at enterprise scale.
Ecosystem integration 9
Excellent integration with LangChain, LlamaIndex, and Python AI tools with native support in most frameworks.

Rank by week:

#6#8#9

Want a better score? How to improve your AEO.

Security headers

What Chroma's website sends to your browser.

Scanned 2026-08-25. Grade headers F, scoring 25 out of 100.

− No Content-Security-Policy, so no defence in depth against cross-site scripting
+ Strict-Transport-Security is set
− No X-Content-Type-Options, so MIME sniffing is not disabled
− No X-Frame-Options and no CSP frame-ancestors, so clickjacking is possible
− No Referrer-Policy, so full URLs may leak to third parties
− No Permissions-Policy, so powerful browser features are not restricted
− No Cross-Origin-Opener-Policy
− No Cross-Origin-Resource-Policy
+ No server-version or X-Powered-By disclosure

This is one narrow, automated check of the HTTP response headers on the vendor's own website. It says nothing about how the product itself is built, how it stores your data, or whether it has ever been audited. A good grade here is a small signal that somebody was paying attention.

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