microsoft/onnxruntime v1.25.1

ONNX Runtime v1.25.1

Repository: microsoft/onnxruntime

Tag: v1.25.1

Published: 2026-04-27T21:46:20Z

Prerelease: no

Release notes: n.b. This changelog is LLM generated. Only the contributor listing has been verified.

ONNX Runtime Release 1.25.1

📢 Announcements & Breaking Changes

ONNX Op Updates

• Enhanced ONNX operator support with new opset versions: Reshape (opset 25), Transpose (opset 24) (#27752)

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✨ New Features

📊 New ONNX Ops & Model Support

• LinearAttention and CausalConvState operators for Qwen3.5 model support (#27907)
• RotaryEmbedding (RotEMB) and RMSNorm operators added (#27752)
• Linear Attention signature support (#27842)

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🌐 Web & JavaScript

WebGPU EP

• Qwen3.5 model support on WebGPU execution provider (#27996)
• QMoE 1-token decode path optimization — fused operations to reduce GPU dispatches for improved performance (#27998)

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🐛 Bug Fixes

Core Runtime Fixes

• Improved filesystem error messages during Linux device discovery for better debugging experience (#27289)
• Fixed missing include for SetRawDataInTensorProto in NVIDIA TensorRT RTX tests (#28065)

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🙏 Contributors

Thanks to our 7 contributors for this release: @guschmue, @sanaa-hamel-microsoft, @apsonawane, @eserscor, @ishwar-raut1, @qjia7, @theHamsta

Full Changelog: https://github.com/microsoft/onnxruntime/compare/v1.25.0...v1.25.1