Arize Phoenix
A self-hostable AI observability workspace for inspecting traces, replaying model calls, managing prompts, and comparing experiments on shared datasets.
✓ Free optionFree to self-host; infrastructure extra
Coding & App Builders
Weaviate
An open-source vector database storing objects and embeddings together, with semantic and keyword search, managed cloud plans, and model integrations.
What it does
An open-source vector database storing objects and embeddings together, with semantic and keyword search, managed cloud plans, and model integrations.
Who it is for
Developers building search around structured objects while retaining self-hosting options.
What stands out
- Object storage with vector embeddings
- Keyword, vector, and hybrid search
- Cloud Query Agent for natural-language database queries
Limitations to consider
- The free cloud plan is restricted to one collection and three tenants.
- Cloud AI services and enterprise features have separate allowances or charges.
Integrations & connections
Tasks it can help with
Sources & verification
This profile is based on vendor documentation, checked Sep 20, 2026. It is not a hands-on review or a performance benchmark. Unknown details are marked explicitly.
Database documentationOfficial cloud pricingSearch patternsSuggest a correctionRead before you decide
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