Promptfoo vs Humanloop
Detailed side-by-side comparison to help you choose the right tool
Promptfoo
🔴DeveloperLLM Evaluation & Testing
Open-source LLM evaluation and red-teaming framework for testing prompts, models, and agents locally or in CI.
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Starting Price
FreeHumanloop
🔴DeveloperLLM evaluation and governance
an LLM development platform for prompt management, evaluations, logging, and trustworthy AI product iteration; the homepage announces the team joining Anthropic.
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Starting Price
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💡 Our Take
Choose Promptfoo if engineering and security teams want open-source, CI-friendly evaluations and automated red-team checks. Choose Humanloop if your organization needs a more collaborative prompt management and evaluation workflow for product, domain expert, and non-engineering review processes.
Promptfoo - Pros & Cons
Pros
- ✓Apache 2.0 local runner with CI-friendly configuration
- ✓Broad provider and assertion coverage
- ✓Evaluation and OWASP-oriented red teaming in one workflow
Cons
- ✗Good test datasets still require substantial human judgment
- ✗LLM-as-judge assertions add cost and evaluator bias
- ✗Hosted Team and Enterprise pricing is not publicly verified here
Humanloop - Pros & Cons
Pros
- ✓Pricing page lists a free starting point: 2 members, 50 eval runs, and 10K logs per month.
- ✓Enterprise features include SSO/SAML, role-based access controls, SLA support, and VPC deployment add-on.
- ✓Strong fit for teams that need prompt engineering, evaluations, logs, and trustworthy LLM app iteration.
Cons
- ✗Homepage announces the Humanloop team is joining Anthropic and says the platform is being sunset, so new buyers must verify availability.
- ✗Enterprise pricing is custom and likely requires sales engagement.
- ✗No MCP support was visible in fetched pages.
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