An independent, evidence-weighted trust comparison of two agent frameworks — ranked on verifiable signals, not popularity.
| Signal | Haystack | LangGraph |
|---|---|---|
| HVTrust score | 94.3 | 93.2 |
| Evidence grade | A | A |
| Registry state | Listed | Listed |
| Safety / Integrity (25) | 23.0 | 21.0 |
| Identity / Provenance (18) | 18.0 | 18.0 |
| Transparency (17) | 15.6 | 14.3 |
| Maintenance (20) | 20.0 | 19.9 |
| Adoption (20) | 17.7 | 20.0 |
| GitHub stars | 25.5k | 33.7k |
| Weekly downloads | 206,739 | 16,239,925 |
| Last push | 2026-06-04 | 2026-06-02 |
| Language | Python | Python |
| OSSF Scorecard | 8.4 | 6.8 |
| Review flags | — | — |
| Recent change | 2026-06-04: HVTrust up 4.1pts (90.2 → 94.3) | 2026-06-01: HVTrust up 3.8pts (89.5 → 93.3) |