---
title: confidence
framework: vision
role: symbol
role_heading: Instance Property
path: vision/vnobservation/confidence
---

# confidence

The level of confidence in the observation’s accuracy.

## Declaration

```swift
var confidence: VNConfidence { get }
```

## Discussion

Discussion The Vision framework normalizes this value to [0.0, 1.0] under most circumstances. A value of 0.0 indicates no confidence. A value of 1.0 indicates highest confidence, or the observation doesn’t support or assign meaning to confidence. note: When the results come from a VNCoreMLRequest, Vision forwards confidence values as-is and doesn’t normalize them.

## See Also

### Evaluating Observations

- [timeRange](vision/vnobservation/timerange.md)
- [VNConfidence](vision/vnconfidence.md)