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

# confidence

The level of confidence in the observation’s accuracy.

## Declaration

```swift
var confidence: Float { 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.

## See Also

### Inspecting an observation

- [uuid](vision/visionobservation/uuid.md)
- [description](vision/visionobservation/description.md)
- [originatingRequestDescriptor](vision/visionobservation/originatingrequestdescriptor.md)
- [RequestDescriptor](vision/requestdescriptor.md)
- [timeRange](vision/visionobservation/timerange.md)