MLflow vs Promptfoo
An independent, evidence-based trust comparison of MLflow 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.
MLflow leads on trust — 89.8/100 (Grade A) vs 88.8/100 (Grade A), a 1.0-point gap. Full breakdown below.
| Signal | MLflowmlflow/mlflow | Promptfoopromptfoo/promptfoo |
|---|---|---|
| HVTrust score | 89.8 | 88.8 |
| Evidence grade | A | A |
| Coverage grade | A | A |
| Overall rank | #13 | #19 |
| Rank in Observability & Evaluation | #1 | #2 |
| GitHub stars | 27.6k | 24.3k |
| Last updated | today | today |
| Build provenance | Yes | Yes |
| OSSF Scorecard | 5.5 / 10 | 7.5 / 10 |
| License | Apache-2.0 | MIT |
| Downloads | 8.8M/wk | 384k/wk |
| Trust dimensions (points earned) | ||
| Safety / integrity / 25 | 19.4 | 16.9 |
| Identity & provenance / 18 | 18.0 | 18.0 |
| Transparency / 17 | 13.2 | 14.9 |
| Maintenance / 20 | 20.0 | 20.0 |
| Adoption / 20 | 19.9 | 18.0 |
| Runtime capability surface (full matrix) | ||
| MCP server | Implemented | Implemented |
| External providers | 3 — Amazon Bedrock, Anthropic, Postgres | 2 — Anthropic, OpenAI |
| Requires API keys | No | Yes |
| Plugin surface | plugins | plugins |
| Provenance drift | Unknown | Match |
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 →