These tools integrates with
PromptFoovsLangfuse
CLI/library for prompt testing and red-teaming versus OSS LLM engineering platform
Compare interactively in Explore →Choose PromptFoo when…
- •You want CLI-first, config-driven LLM evals
- •Running eval suites in CI/CD pipelines is a goal
- •You need red-teaming and safety testing built in
Choose Langfuse when…
- •You want open-source LLM observability
- •Self-hosting your tracing stack is important
- •You need cost tracking across models and users
Side-by-side comparison
Field
PromptFoo
Langfuse
Category
Prompt & Eval
LLM Infrastructure
Type
Open Source
Open Source
Free Tier
✓ Yes
✓ Yes
Pricing Plans
—
Cloud: $59/mo
GitHub Stars
⭐ 5,000
⭐ 7,000
Health
●80 — Active
●80 — Active
PromptFoo
Test and compare prompts across models. Built-in red-teaming, regression testing, and side-by-side model comparison.
Shared Connections3 tools both integrate with
Only PromptFoo (3)
VellumLangfuseGalileo
Only Langfuse (27)
Claude CodeCrewAILangGraphLangChainCursorLlamaIndexOpenHandsDifyMastraAutoGen
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See how PromptFoo and Langfuse fit into the bigger picture — 207 tools, 452 relationships, all mapped.