# ONNX Runtime v1.28.2 — ONNX Runtime v1.28.2

- Product: ONNX Runtime (https://whatsnew.fyi/product/onnx-runtime)
- Vendor: Microsoft
- Date: 2026-09-03
- Version: v1.28.2
- Original notes: https://github.com/microsoft/onnxruntime/releases/tag/v1.28.2
- Permalink: https://whatsnew.fyi/product/onnx-runtime/releases/v1.28.2

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- **fixed** — Fixed Compile API callback serialization to prevent duplicate graph nodes, inputs, outputs, and value information in emitted optimized models, including models with embedded or external initializers

This is a patch release on top of [v1.28.1](https://github.com/microsoft/onnxruntime/releases/tag/v1.28.1), containing a targeted fix for Compile API model serialization.

##### Highlights

###### Bug Fixes

- Fixed Compile API callback serialization to prevent duplicate graph nodes, inputs, outputs, and value information in emitted optimized models, including models with embedded or external initializers ([#32303](https://github.com/microsoft/onnxruntime/pull/32303))

##### Contributors

Thanks to our contributor for this release!

[@adrastogi](https://github.com/adrastogi)

Full Changelog: [v1.28.1...v1.28.2](https://github.com/microsoft/onnxruntime/compare/v1.28.1...v1.28.2)

> These release notes were drafted with assistance from GitHub Copilot.