Which one AI picks, and when.
Data as of Aug 4, 2026 · Based on 5 AI claims comparing the two · See how Parse measures this
Head to head
The two are furthest apart on reach, where Express leads by 9 points.
| Measure |  Express |  Fastify |
|---|---|---|
| Parse Score | 68 |
| 68 |
| Strength | 50 | 51 |
|---|
| Reach (widest gap) | 64 | 55 |
|---|
| Authority | 41 | 50 |
|---|
