Promptfoo vs Weights & Biases

A side-by-side look at pricing, capabilities, pros, cons, and our editorial scores.

	Promptfoo Evaluation	Weights & Biases Evaluation
Tagline	Open-source eval and red-teaming framework for LLM apps, prompts, and RAG pipelines.	The ML experiment tracker, now with LLM eval features.
Category	Evaluation	Evaluation
Pricing	Freemium· Community: Free · Enterprise: Custom · On-Premise: Custom	Freemium· Free: $0/mo · Pro: Starts at $60/month · Enterprise: Custom plans · Personal: $0/mo · Advanced Enterprise: Custom plan
Model	Multi-model	Platform (any LLM)
Editorial score	7.2 / 10	8.4 / 10
Use cases	llm-evalsred-teamingprompt-regressionrag-testingai-securityci-cd-guardrails	ML experimentsLLM evalWeave
Pros	Genuinely open source and self-hostable, not a fake-OSS funnel Model-agnostic; works across OpenAI, Anthropic, local, custom APIs Red-teaming covers prompt injection, jailbreaks, PII, policy violations Clean CI integration with GitHub/GitLab/Jenkins for regression catching Large community and Fortune-500 adoption signal staying power	Industry-standard for ML tracking Weave adds LLM-native eval Mature, reliable Strong enterprise features
Cons	YAML-heavy config has a learning curve for non-engineers Enterprise pricing is opaque (contact sales only) Red-team scans can be slow and token-expensive at scale	Heavier UX than LLM-native tools LLM features still catching up
Website	promptfoo.dev	wandb.ai

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