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Project comparison
Promptfoo vs langchain
Compare adoption, momentum, maintenance health, and project basics before choosing which tool to evaluate deeper.
Promptfoo
Test your prompts, agents, and RAGs. Red teaming/pentesting/vulnerability scanning for AI. Compare performance of GPT, Claude, Gemini, DeepSeek, and more. Simple declarative configs with command line and CI/CD integration. Used by OpenAI and Anthropic.
Best matched with other agent tools.
23.5K
Stars
+2.3K
Weekly
93/100
Health
142.3K
Stars
+599
Weekly
86/100
Health
Quick Take
Adoption
langchain has the larger GitHub footprint with 142.3K stars.
Momentum
Promptfoo is currently growing faster at +2.3K stars this week.
Maintenance
Promptfoo has the stronger automated maintenance signal at 93/100. This is not a security or fit verdict.
Side-by-side evidence
Use these signals to narrow your choice, then confirm setup, license, and fit upstream.
| Signal | Promptfoo | langchain |
|---|---|---|
| Evidence status | Basic listing· 2d ago | Recently verified· 2d ago |
| GitHub stars | 23.5K | 142.3K |
| Weekly growth | +2.3K | +599 |
| Health score | Strong93/100 |
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