A model can be accurate and still fail as a feature. Real success is measured in adoption, task completion and business outcomes, not benchmark scores.
The metrics that matter
| Layer | Example metric |
|---|---|
| Model | Accuracy, precision/recall |
| Product | Task success rate, adoption |
| Business | Revenue, retention, time saved |
| Cost | Cost-to-serve per task |
Traps to avoid
- Celebrating accuracy while adoption is zero.
- Ignoring cost-to-serve.
- No baseline to compare against.
- Vanity metrics disconnected from outcomes.
