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Features, pricing and Editor Score side by side — to help you pick the right coding & development tool in 2026.
Quick verdict
On our Editor Score, Promptfoo and StackHawk land almost level. Pick Promptfoo if you want declarative YAML tests for prompts and models; choose StackHawk for dynamic application security testing against running apps. On pricing, each has a free or freemium plan, so cost isn't the deciding factor here.
| Pricing | Freemium | Freemium |
| Free tier | ||
| Best for | declarative YAML tests for prompts and models | dynamic application security testing against running apps |
Test and red-team prompts, agents, and RAG apps
AI-integrated DAST and API security testing
Choose Promptfoo if…
Choose StackHawk if…
Your use case decides this one: Promptfoo leans into declarative YAML tests for prompts and models, while StackHawk is built for dynamic application security testing against running apps. Weigh features and pricing for your workflow. Both have a free or freemium tier, so spin up each and keep the one that clicks.
Neither is universally better — it depends on your budget and which features matter most. The side-by-side breakdown above shows where each one wins.
Promptfoo (freemium) is best for declarative YAML tests for prompts and models, while StackHawk (freemium) is best for dynamic application security testing against running apps. See the full feature and pricing comparison above.
Both have paid plans — pricing depends on your usage tier. Open each tool's review for current prices, and watch for free trials.
Promptfoo is usually the easier starting point thanks to a lower barrier to entry. Beginners should favour a free tier and a simple interface over raw power.
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Last updated August 2026. Comparisons are ranked by our Editor Score (features, value and pricing, blended with verified user reviews where a tool has them) — see our methodology.