Braintrust vs promptfoo
Side-by-side comparison built from DeepYard's structured catalog. Content updated Aug 21, 2026.
Direct Answer
Braintrust suits teams needing freemium $50/mo, langchain focus, and 1,196 GitHub stars in current listing data. promptfoo suits teams needing open-source access, testing focus, and 24,450 GitHub stars in current listing data. This summary reflects catalog metadata only for decision support, not independent testing.
What this comparison weighs
- Pricing and free-tier availability
- License model and deployment fit
- GitHub adoption and contributor depth
- Catalog tags, integrations, and supported workflows
| Metric | Braintrust | promptfoo |
|---|---|---|
| GitHub Stars | 1.2K | 24.4K |
| Contributors | 93 | 318 |
| Last Commit | Aug 22, 2026 | Aug 21, 2026 |
| Open Issues | 29 | 515 |
| License | commercial | open-source |
| Pricing | freemium | open-source |
| Free Tier | Yes | Yes |
| Category | dev-tools | dev-tools |
| Trending | No | No |
Choose Braintrust if you need
- • Braintrust is the stronger pick when Langchain matters because that capability is listed only on its profile.
- • Braintrust is the cleaner fit if you specifically need Experiment Tracking workflows from the catalog tags.
Choose promptfoo if you need
- • promptfoo is the better fit when you need open-source licensing instead of commercial terms.
- • promptfoo stands out for Testing workflows that are not listed for Braintrust.
- • promptfoo is the stronger pick when Gemini matters because that capability is listed only on its profile.
Meaningful differences
- • Pricing model: Braintrust is listed as freemium from $50/mo, while promptfoo is listed as open-source.
- • License: Braintrust uses commercial, while promptfoo uses open-source.
- • Workflow emphasis: Braintrust highlights Evaluation, while promptfoo highlights Testing.
- • GitHub adoption: Braintrust shows 1,196 stars versus 24,450 for promptfoo.
- • Contributor count: Braintrust lists 93 contributors and promptfoo lists 318.
Shared capabilities
- • Evaluation
- • Testing
- • Ci Cd
- • Openai
- • Anthropic
Shared Tags
Only in Braintrust
Only in promptfoo
Limitations and evidence
- • DeepYard compares structured public metadata; this is not an independent benchmark unless a test record is shown.
- • Signals such as stars, contributors, and last commit indicate public activity, not purchase fit or runtime quality.
- • Pricing and feature coverage reflect the stored listing snapshot and may lag vendor changes between refreshes.
About Braintrust
Braintrust is a developer-first evaluation and experiment tracking platform built for LLM applications. It lets teams define scoring functions, run evaluations against golden datasets, compare prompt and model variants side-by-side, and track quality metrics over time. The platform integrates directly into CI/CD pipelines so regressions are caught before they reach production.
View full listingAbout promptfoo
promptfoo is an open-source tool for testing, evaluating, and red-teaming LLM applications. Run automated evaluations across multiple models and prompts, compare outputs side-by-side, detect regressions, and test for security vulnerabilities. Supports custom assertions, CI/CD integration, and model-graded evaluations.
View full listing