Alternatives

The Best promptfoo Alternatives in 2026

16 alternatives0 free · 11 open source

Looking for something like promptfoo? Here are 16 alternatives, ranked by how closely they match it on purpose, features and platforms. Of these, 11 are open source.

About promptfoogithub.com/typpo/promptfoo
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promptfoo tests prompts, agents, and retrieval systems with evaluations and security testing.

PricingNot confirmed
Platforms—

Top picks at a glance

Quick comparison

#AlternativePricingOpen sourcePlatforms
1LangWatch —Yes—
2LangKit —Yes—
3ReviewCerberus —Yes—
4Qodo —Not statedWeb
5rehydra —Yes—
6EvalView —Yes—
7Greywall —YesLinux, macOS
8PR-Agent —Yes—
9OpenCodeReview —Yes—
10PR-Agent —Yes—
16 shown

All promptfoo alternatives

2

LangKit

github.com/whylabs/langkitOpen source
Also covers prompt engineering · same kind of open-source project

LangKit monitors language model prompts and responses and extracts signals related to safety and security.

7

Greywall

github.com/GreyhavenHQ/greywallOpen source
Also covers open source · same kind of open-source project

Greywall provides a deny-by-default sandbox for AI coding agents, with kernel-enforced isolation on Linux and macOS.

11

Blinky

github.com/seahyinghang8/blinkyOpen source
Also covers open source · same kind of open-source project

Blinky provides an open-source AI debugging agent integrated into Visual Studio Code.

12

h5i

github.com/h5i-dev/h5iOpen source
Also covers open source · same kind of open-source project

h5i provides a red-teaming workspace with browser access, HTTP traffic controls, sandboxed execution, and auditable sessions.

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Alternatives to similar tools

All alternatives
What is the best alternative to promptfoo?
Based on features, tags and platforms, the closest alternatives to promptfoo are LangWatch, LangKit, and ReviewCerberus.
Are there open-source alternatives to promptfoo?
Yes: LangWatch, LangKit, ReviewCerberus, and rehydra.

Alternatives are suggested from the purpose and features described in our listings. Different pages for the same product appear once. Read each description to check whether it fits your task. How we choose alternatives · Suggest an alternative