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Opik vs Promptfoo: catalog facts
Opik	Promptfoo
Free The open-source platform is free to self-host.	Freemium The open-source CLI is free; enterprise features are sold separately.
Web, Self-hosted	Command line
Tracing, automated evaluations and dashboards together Covers RAG systems and agent workflows	Runs from the command line with a single npx command Compares prompts and models side by side
Self-hosting means running several services yourself Contributors must sign a CLA	Red-teaming features are intended for authorized testing of your own applications Some reporting features belong to the paid enterprise edition
Self-hosted	Downloadable app
Open source	Open source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 26, 2026	Official website Full listing and sources Checked September 26, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.