# Promptfoo vs DeepEval: 2026 Empirical Benchmark & Cost Shootout

> **Direct Answer (October 2026 Verdict)**: Promptfoo wins on declarative YAML CI/CD matrix testing and automated OWASP LLM Top-10 red-team vulnerability scanning with 26.0k+ GitHub stars (93.4), while DeepEval wins for Python engineers who want Pytest-native unit tests and 40+ RAG faithfulness/G-Eval metrics (91.5).

- **Category**: LLM Evaluation, CI/CD Testing & Red-Teaming Shootout
- **Canonical URL**: https://exactbaseline.com/vs/promptfoo-vs-deepeval
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## Promptfoo Key Advantages
- 26,042+ GitHub stars under MIT license with zero-code YAML prompt & model matrix comparison
- Automated OWASP LLM Top-10 red-teaming for prompt injection, PII leaks, and SSRF
- 1-command GitHub Actions CI gate with local web viewer and zero cloud lock-in

## DeepEval Key Advantages
- 18,901+ GitHub stars with native `deepeval test run` Pytest CLI and Python decorator workflow
- 40+ specialized RAG and agent metrics including G-Eval, Contextual Recall, and Tool Correctness
- Synthetic test dataset generation and self-explaining metric failure reasons