Evidently vs Promptfoo
An independent, evidence-based trust comparison of Evidently and Promptfoo, two Observability & Evaluation projects in the HVTracker registry. Scores come from public, checkable signals — supply-chain provenance, OSSF Scorecard, maintenance, and adoption — not popularity.
Evidently leads on trust — 76.9/100 (Grade B) vs 75.3/100 (Grade B), a 1.6-point gap. Full breakdown below.
| Signal | Evidentlyevidentlyai/evidently | Promptfoopromptfoo/promptfoo |
|---|---|---|
| HVTrust score | 76.9 | 75.3 |
| Evidence grade | B | B |
| Coverage grade | A | A |
| Overall rank | #75 | #86 |
| Rank in Observability & Evaluation | #5 | #7 |
| GitHub stars | 7.8k | 24.1k |
| Last updated | 3d ago | today |
| Build provenance | Yes | Yes |
| OSSF Scorecard | 3.3 / 10 | — |
| License | Apache-2.0 | MIT |
| Downloads | 319k/wk | 384k/wk |
| Trust dimensions (points earned) | ||
| Safety / integrity / 25 | 16.1 | 7.5 |
| Identity & provenance / 18 | 18.0 | 18.0 |
| Transparency / 17 | 11.3 | 8.5 |
| Maintenance / 20 | 11.8 | 20.0 |
| Adoption / 20 | 16.7 | 18.0 |
| Runtime capability surface (full matrix) | ||
| MCP server | — | Implemented |
| External providers | 3 — Multi-provider (LiteLLM), OpenAI, Postgres | 2 — Anthropic, OpenAI |
| Requires API keys | No | Yes |
| Plugin surface | — | plugins |
| Provenance drift | Match | Match |
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Evidently profile
Promptfoo profile
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How to read this: HVTrust (0–100) weighs supply-chain signals (provenance, OSSF Scorecard, signed commits, open license) alongside real-world adoption, scaled by an evidence-confidence factor. Grade bands: A ≥ 80, B ≥ 65, C ≥ 50, D < 50. Signals refresh daily. Full methodology v4.3 →