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Head-to-head · LLM Evaluation Tools

Promptfoo vs Braintrust

  • Updated Oct 2026
  • Both researched from official sources
  • 7 checks side by side
Higher score Promptfoo #2 in LLM Evaluation Tools 9.3/10 Free plan Free plan✓ 5 of 6 features Visit Promptfoo
Braintrust #5 in LLM Evaluation Tools 8.9/10 Free plan Free plan✓ 6 of 6 features Visit Braintrust

Promptfoo leads on 0 checks, Braintrust on 0, and 7 are even. Who comes out ahead on the 7 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scorePromptfoo · 9.3/10
  • Free planboth
  • Most featuresBraintrust · 6 of 6

Promptfoo scores higher on our rubric for llm evaluation tools: 9.3 against 8.9 out of 10; our editors rank them #2 and #5.

Promptfoo is the better fit for teams needing evaluation plus red teaming. Braintrust is the better fit for teams combining evaluations with production tracing.

  • Promptfoo fits best

    Teams needing evaluation plus red teaming

  • Braintrust fits best

    Teams combining evaluations with production tracing

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Side by side

Feature Promptfoo 9.3/10 Visit ↗ Braintrust 8.9/10 Visit ↗
At a glance
Editor score 9.3 8.9
Ranking #2 in LLM Evaluation Tools #5 in LLM Evaluation Tools
Best for Teams needing evaluation plus red teaming Teams combining evaluations with production tracing
Pricing model Free plan + paid Free plan + paid
Starting price — $249/mo
Free plan ✓ ✓
Free trial — —
Deployment Cloud, Self-hosted Cloud, Self-hosted
Platforms Web Web
Support Community, Docs Community, Docs
Compliance SOC 2, ISO 27001 SOC 2, GDPR, HIPAA, SSO/SAML, 2FA
Integrations 12 integrations 50+ integrations
Built for Solo, Small business, Mid-market, Enterprise Small business, Mid-market, Enterprise
Features Promptfoo 5/6 · Braintrust 6/6
Custom metrics ✓ ✓
LLM-as-a-judge ✓ ✓
Safety evaluations ✓ ✓
Human review workflows ✓ ✓
Prompt versioning Not checked yet ✓ (best)
CI/CD integration ✓ ✓
Specs
Deployment options Both Both
Our review
Pros
  • Evaluates prompts, models, and RAG pipelines with custom assertions
  • Combines red teaming, vulnerability scanning, and safety evaluations
  • Supports local, self-hosted, cloud, API, and CI/CD workflows
  • Combines offline, online, and human-reviewed evaluations
  • Turns production traces into evaluation datasets and regression tests
  • Supports hosted and self-hosted data-plane deployments
Cons
  • Enterprise and On-Premise pricing is custom
  • Advanced collaboration and monitoring features require paid tiers
  • Its broad scope may exceed the needs of teams seeking only prompt comparison
  • Pro starts at $249 per month before usage-based charges
  • Starter retention is limited to 14 days
  • Broad scope may exceed the needs of evaluation-only teams
Our verdict

Promptfoo is an open-source CLI and library for evaluating, testing, and red-teaming large-language-model applications. It is designed for developers and teams building AI applications that need to benchmark prompts, models, or RAG…

Read the review →

Braintrust is a platform for evaluating, monitoring, and improving AI applications and agents. It suits teams that need evaluation workflows alongside production observability, including dataset management, experiment comparison, scoring,…

Read the review →
  1. PromptfooLLM Evaluation Tools 9.3Free plan
  2. BraintrustLLM Evaluation Tools 8.9Free plan

Strengths and trade-offs

  • Promptfoo — where it wins

    • Evaluates prompts, models, and RAG pipelines with custom assertions
    • Combines red teaming, vulnerability scanning, and safety evaluations
    • Supports local, self-hosted, cloud, API, and CI/CD workflows

    Where it doesn't

    • Enterprise and On-Premise pricing is custom
    • Advanced collaboration and monitoring features require paid tiers
    • Its broad scope may exceed the needs of teams seeking only prompt comparison

  • Braintrust — where it wins

    • Combines offline, online, and human-reviewed evaluations
    • Turns production traces into evaluation datasets and regression tests
    • Supports hosted and self-hosted data-plane deployments

    Where it doesn't

    • Pro starts at $249 per month before usage-based charges
    • Starter retention is limited to 14 days
    • Broad scope may exceed the needs of evaluation-only teams

More comparisons

All LLM evaluation tools comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update