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pypi / coremltools

coremltools

What changed in coremltools 9, from its official release notes, upgrade guides and advisories. Sources checked 2026-10-18.

3 new APIs and options1 performance3 behavior and defaults4 fixes and other

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coremltools 911 changes

New APIs and options 3

  • The AllowLowPrecisionAccumulationOnGPU optimization hint is available.

    9.0release notes

  • Model inputs and outputs can use the int8 dtype.

    9.0release notes

  • Models can be read and written with state.

    9.0release notes

Performance 1

Behavior and default changes 3

  • Additional metadata is automatically added to converted models.

    9.0release notes

  • iOS 26, macOS 26, watchOS 26, and tvOS 26 deployment targets are supported.

    9.0release notes

  • Python 3.13 is supported.

    9.0release notes

Fixes and other changes 4