Compare providers
Pick up to three. Scores are curated estimates on a 0–10 scale. Lock-in: higher = worse.
| Dimension | Promptfoo | Guardrails AI |
|---|---|---|
| Overall | 8.4 | 8.2 |
| Capability fit | 8.2 | 8.4 |
| Price / performance | 9.2 | 8.8 |
| Latency / reliability | 7.8 | 7.8 |
| Developer & agent DX | 8.8 | 8.2 |
| Privacy / data retention | 9.0 | 8.5 |
| Lock-in risk (higher = worse) | 2.5 | 3.0 |
| Maturity / track record | 8.0 | 7.8 |
| Pricing | As of 2026-10-24 (promptfoo.dev/pricing, fetched 2026-10-24): Community 'Free Forever' ('Our open-source tool, perfect for individual developers and small teams.') with 'Red teamin… | As of 2026-10-28: OSS Guardrails + Guardrails Hub (70+ validators) free/self-host. Guardrails Pro enterprise managed — usage-based / quote; AWS Marketplace listings historically ci… |