# init(input:expected:expectations:) Creates a model sample with a prebuilt input. ``` init(input: ModelSampleInput, expected: ExpectedValue? = Optional(nilLiteral: ()), expectations: TrajectoryExpectation? = nil) ``` --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)