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Name	Modified	Size	InfoDownloads / Week
Parent folder
README.md	2026-06-15	18.6 kB	0
v1.22.0 source code.tar.gz	2026-06-15	13.7 MB	0
v1.22.0 source code.zip	2026-06-15	19.1 MB	6
Totals: 3 Items		32.8 MB	6

ONNX v1.22.0 is now available with exciting new features! We would like to thank everyone who contributed to this release! Please visit onnx.ai to learn more about ONNX and associated projects.

What's Changed

Breaking Changes and Deprecations

Swap qk_matmul_output_mode 1 & 2 to match computation order by @titaiwangms in https://github.com/onnx/onnx/pull/7913

Spec and Operator

Fix number of pad modes in doc_strings.cc by @assafpr in https://github.com/onnx/onnx/pull/7803
Add FlexAttention Op to ai.onnx.preview opset by @mshr-h in https://github.com/onnx/onnx/pull/7534
Fix Attention op softcap ordering: apply before mask/bias by @titaiwangms in https://github.com/onnx/onnx/pull/7867
Add LinearAttention and CausalConvWithState operators (Opset 27) by @tadani3 in https://github.com/onnx/onnx/pull/7950
feat(generator): extend Range operator with float16 and bfloat16 support (opset 27) by @andife in https://github.com/onnx/onnx/pull/7923

Reference Implementation

Fix missing 'mul' reduction in ScatterElements reference implementation by @zdryan in https://github.com/onnx/onnx/pull/7842
Fix QLinearMatMul output saturation by @karimbaidar in https://github.com/onnx/onnx/pull/7868
Fixed more bugs in the Scan reference op by @tadani3 in https://github.com/onnx/onnx/pull/7964

Utilities and Tools

Fix Slice shape inference crashes with SIGABRT on empty dimensions by @titaiwangms in https://github.com/onnx/onnx/pull/7738
Rename misleading input_rank param to input_dim_value in processSlice… by @titaiwangms in https://github.com/onnx/onnx/pull/7739
fix: Conv/Pool strides validation by @edgchen1 in https://github.com/onnx/onnx/pull/7764
fix: add input/output bounds checks in version converter adapter by @andife in https://github.com/onnx/onnx/pull/7813
Harden version conversion against malformed inputs by @andife in https://github.com/onnx/onnx/pull/7872
fix: add input rank checks in Gemm version converter adapters by @andife in https://github.com/onnx/onnx/pull/7880
Fix raw_data handling in version converter adapters by @cyyever in https://github.com/onnx/onnx/pull/7910
Fix checker to use len() instead of sys.getsizeof() for protobuf size check by @OmarAzizi in https://github.com/onnx/onnx/pull/7760
Add version macros by @cbourjau in https://github.com/onnx/onnx/pull/7918
Remove internal spec_to_yaml tool by @cbourjau in https://github.com/onnx/onnx/pull/7985
Address shape inference shortcomings by @yuslepukhin in https://github.com/onnx/onnx/pull/7997
Add unifyInputShape / unifyInputShapePrefix shape inference utilities by @gramalingam in https://github.com/onnx/onnx/pull/7999
Add operator+ and operator- for Dim by @gramalingam in https://github.com/onnx/onnx/pull/8000
Fix KeepAspectRatioHelper precision for scaled output dimensions by @elwhyjay in https://github.com/onnx/onnx/pull/8007
Fix heap buffer over-read in Conv/Pool shape inference for weight rank mismatch by @Copilot in https://github.com/onnx/onnx/pull/8037

Build, CI and Tests

Add update into main.yml by @titaiwangms in https://github.com/onnx/onnx/pull/7687
Update check_urls.yml by @andife in https://github.com/onnx/onnx/pull/7716
Update add_msvc_runtime_flag to work with MSVC_RUNTIME_LIBRARY by @Shadows-of-Fire in https://github.com/onnx/onnx/pull/7660
Try to fix renovate by @andife in https://github.com/onnx/onnx/pull/7742
fix upload; Update release_win.yml by @andife in https://github.com/onnx/onnx/pull/7728
Allow release CIs to run when a labeled PR receives new commits by @Copilot in https://github.com/onnx/onnx/pull/7741
Update pixi.{toml,lock} by @cbourjau in https://github.com/onnx/onnx/pull/7746
hash for googletest by @andife in https://github.com/onnx/onnx/pull/7765
Update RELEASE-MANAGEMENT.md by @andife in https://github.com/onnx/onnx/pull/7773
Update doc CIPipeline by @andife in https://github.com/onnx/onnx/pull/7782
use reviewdog to fix the pr_checks workflow by @andife in https://github.com/onnx/onnx/pull/7780
Update copilot-setup-steps.yml; persist-credentials: false by @andife in https://github.com/onnx/onnx/pull/7768
Update release_linux.yml; replace tag by hash by @andife in https://github.com/onnx/onnx/pull/7769
Fix pipeline src preview by @andife in https://github.com/onnx/onnx/pull/7787
Bump protobuf to v33.6 by @cyyever in https://github.com/onnx/onnx/pull/7517
fix pr_checks_post.yml by using the correct reporter in reviewdog by @andife in https://github.com/onnx/onnx/pull/7789
Skip very slow Python tests on Windows debug builds by @cbourjau in https://github.com/onnx/onnx/pull/7819
Fix cross-platform date command in CMakeLists.txt by @Chessing234 in https://github.com/onnx/onnx/pull/7816
Modify URL checker workflow permissions and action by @andife in https://github.com/onnx/onnx/pull/7832
fix additional input in workflow by @andife in https://github.com/onnx/onnx/pull/7834
fix: suppress unused-parameter warnings in try_kernel_contained_open by @andife in https://github.com/onnx/onnx/pull/7849
Pin GitHub Actions to immutable commit SHAs by @andife in https://github.com/onnx/onnx/pull/7852
Add wheels for Pyodide by @andife in https://github.com/onnx/onnx/pull/7847
Improve CodeQL config by @cyyever in https://github.com/onnx/onnx/pull/7870
integrate check-wheel-contents in CI workflows by @andife in https://github.com/onnx/onnx/pull/7846
feat: embed CycloneDX SBOM in wheel per PEP 770 by @andife in https://github.com/onnx/onnx/pull/7861
Fix CI link-checker issues by @cbourjau in https://github.com/onnx/onnx/pull/7909
fix: only download artifacts on workflow_dispatch in publish_release_build_to_pypi by @andife in https://github.com/onnx/onnx/pull/7912
topic: Allow overriding cmake build directory via environment variable by @WithEnoughCoffee in https://github.com/onnx/onnx/pull/7915
Ignore blocked links by @cbourjau in https://github.com/onnx/onnx/pull/7919
chore: improve Renovate config — cooldown, correct label, PR notes by @andife in https://github.com/onnx/onnx/pull/7922
Fix link-checker CI by @cbourjau in https://github.com/onnx/onnx/pull/7924
Update Python version matrix in release workflow; skip 3.13t for a gr… by @andife in https://github.com/onnx/onnx/pull/7932
Update Python versions in release workflow (remove 3.13t from testing) by @andife in https://github.com/onnx/onnx/pull/7934
Remove cpplint (superseded by clang-tidy) by @cbourjau in https://github.com/onnx/onnx/pull/7942
Add hard-failing zizmor lint and fix existing issues by @cbourjau in https://github.com/onnx/onnx/pull/7941
Remove redundant reuse-action by @cbourjau in https://github.com/onnx/onnx/pull/7943
Fix links (and thus CI error) by @cbourjau in https://github.com/onnx/onnx/pull/7946
CI: add labeled SLSA provenance test path and harden checkout credentials by @andife in https://github.com/onnx/onnx/pull/7951
Remove submodules option from lint workflow by @andife in https://github.com/onnx/onnx/pull/7958
Use cibuildwheel for all releases by @cbourjau in https://github.com/onnx/onnx/pull/7901
Fix generated md files by @cbourjau in https://github.com/onnx/onnx/pull/7973
Use Renovate to update pixi lock file once a month by @cbourjau in https://github.com/onnx/onnx/pull/7980
fix: revert accidental protobuf v33.6 bump and remove requirements-release_build.txt by @andife in https://github.com/onnx/onnx/pull/7982
Run pip check to validate consistency of pyproject-dependencies with environment by @cbourjau in https://github.com/onnx/onnx/pull/7960
Build correct pyemscripten wheel for PyPI by @cbourjau in https://github.com/onnx/onnx/pull/7998
Use same 25.1 protobuf for all releases and simplify sbom creation by @cbourjau in https://github.com/onnx/onnx/pull/7995
fix: prevent cmake parallel build race in proto generation by @andife in https://github.com/onnx/onnx/pull/8003
fix: correct argument order in ONNX_OPERATOR_SET_SCHEMA_DEBUG_VARIABLE macro call by @andife in https://github.com/onnx/onnx/pull/8004
Enable MSVC warnings by @justinchuby in https://github.com/onnx/onnx/pull/7562
Fix/sdist missing SBOM cdx json by @andife in https://github.com/onnx/onnx/pull/8010
Follow up for scikit-build-core migration by @take-cheeze in https://github.com/onnx/onnx/pull/8017
Run lints also on Windows by @cbourjau in https://github.com/onnx/onnx/pull/8014
Fix xcode build by @cbourjau in https://github.com/onnx/onnx/pull/8056

Documentation

bump VERSION_NUMBER in main branch by @Sunny-Anand in https://github.com/onnx/onnx/pull/7712
remove link for check_urls action by @Sunny-Anand in https://github.com/onnx/onnx/pull/7713
bump version for defs operator and schema after main version bump by @Sunny-Anand in https://github.com/onnx/onnx/pull/7715
Add Security Assurance Case document by @andife in https://github.com/onnx/onnx/pull/7679
Add CLAUDE.md with project guidelines for Claude Code by @cyyever in https://github.com/onnx/onnx/pull/7666
Update RELEASE-MANAGEMENT.md by @andife in https://github.com/onnx/onnx/pull/7762
Update RELEASE-MANAGEMENT.md by @andife in https://github.com/onnx/onnx/pull/7774
Fix documentation typos and grammar errors in API docs by @Chessing234 in https://github.com/onnx/onnx/pull/7809
Add ONNX Incident Response Plan document by @andife in https://github.com/onnx/onnx/pull/7830
Add skill files for new op, op updates, function body definition, type and shape inference by @gramalingam in https://github.com/onnx/onnx/pull/7878
Fix reuse by @andife in https://github.com/onnx/onnx/pull/7899
Execute code snippets in PythonAPIOverview.md (+ fixes) by @cbourjau in https://github.com/onnx/onnx/pull/7856
Extend release compatibility matrix back to ONNX 1.10 by @andife in https://github.com/onnx/onnx/pull/7929
Update RELEASE-MANAGEMENT.md by @andife in https://github.com/onnx/onnx/pull/7976
Update RELEASE-MANAGEMENT.md by @andife in https://github.com/onnx/onnx/pull/7977
Render literal < in Cast FLOAT8E8M0 docs table by @Copilot in https://github.com/onnx/onnx/pull/7936
Fix escaped default attribute values in generated operator docs by @Copilot in https://github.com/onnx/onnx/pull/8002

Other Changes

Improve external data file handling by @titaiwangms in https://github.com/onnx/onnx/pull/7686
Extend parser/printer to support quoted strings as symbolic dims by @Copilot in https://github.com/onnx/onnx/pull/7699
Improve external data file handling - onnx.load by @titaiwangms in https://github.com/onnx/onnx/pull/7717
docs: fix window size type constraint wording by @tsubasakong in https://github.com/onnx/onnx/pull/7719
Improve spec_to_yaml.py by @cyyever in https://github.com/onnx/onnx/pull/7734
Enhance ONNX_HARDENING with OpenSSF-recommended compiler flags by @cyyever in https://github.com/onnx/onnx/pull/7724
Fix various issues by @cyyever in https://github.com/onnx/onnx/pull/7737
Enable more ruff rules by @cyyever in https://github.com/onnx/onnx/pull/7748
Merged Fix object state corruption and DoS via ExternalDataInfo attribute injection by @titaiwangms in https://github.com/onnx/onnx/pull/7751
Update SECURITY.md by @andife in https://github.com/onnx/onnx/pull/7779
Fix formatting in RELEASE-MANAGEMENT.md by @andife in https://github.com/onnx/onnx/pull/7781
Rename docs to match PascalCase by @andife in https://github.com/onnx/onnx/pull/7778
Remove the autoupdate doc workflow by @cbourjau in https://github.com/onnx/onnx/pull/7785
Fix test_adam_multiple missing epsilon attribute in model.onnx by @Krishnachaitanyakc in https://github.com/onnx/onnx/pull/7763
Fix np.prod integer overflow on numpy < 2.0 by using dtype=np.int64 by @cyyever in https://github.com/onnx/onnx/pull/7783
Fix TOCTOU race in external data file open by @cyyever in https://github.com/onnx/onnx/pull/7790
Fix nanobind arg name by @cbourjau in https://github.com/onnx/onnx/pull/7823
Fix various linting issues and broken links by @cbourjau in https://github.com/onnx/onnx/pull/7826
Add Pixi task for building docs from locked environment by @cbourjau in https://github.com/onnx/onnx/pull/7824
Update Docker image version for x86_64 wheel build by @andife in https://github.com/onnx/onnx/pull/7804
Update CMakeLists.txt; update nanobind to 2.12.0 by @andife in https://github.com/onnx/onnx/pull/7851
Build docs on CI using Pixi by @cbourjau in https://github.com/onnx/onnx/pull/7845
Extend renovate config: track googletest releases with hash and auto-label PRs by @andife in https://github.com/onnx/onnx/pull/7853
improve codeql by @andife in https://github.com/onnx/onnx/pull/7863
Improve test matrix (e.g. fix unity build) by @cbourjau in https://github.com/onnx/onnx/pull/7860
Remove non-functional and insecure split-workflow CI pairs by @andife in https://github.com/onnx/onnx/pull/7876
Normalize legacy helper names to explicit opset ranges by @andife in https://github.com/onnx/onnx/pull/7873
fix: detect cycles in model-local functions to prevent stack overflow (GHSA-7w46-vvrh-m8q5) by @cyyever in https://github.com/onnx/onnx/pull/7815
Add pre-commit hooks by @cbourjau in https://github.com/onnx/onnx/pull/7857
Apply ruff formatting by @cbourjau in https://github.com/onnx/onnx/pull/7908
Remove deduplicated helpers by @cyyever in https://github.com/onnx/onnx/pull/7907
fix: add rank check in RNNShapeInference_opset1_to_6 to prevent OOB read by @andife in https://github.com/onnx/onnx/pull/7879
Drop redundant semicolons in macros by @cyyever in https://github.com/onnx/onnx/pull/7911
Fix wrong mantissa mask in to_float8e8m0 round-up mode by @cyyever in https://github.com/onnx/onnx/pull/7784
Fix null pointer dereferences in shape inference by @cyyever in https://github.com/onnx/onnx/pull/7916
Fix Resize shape inference precision for scaled output dimensions by @elwhyjay in https://github.com/onnx/onnx/pull/7874
Add clang-tidy CI job by @cbourjau in https://github.com/onnx/onnx/pull/7877
Fix protobuf field checks and add GRAPHS attribute handling by @cyyever in https://github.com/onnx/onnx/pull/7753
ci: add SLSA Build Level 2 provenance attestations for published artifacts by @andife in https://github.com/onnx/onnx/pull/7925
fix: improve diagnostic when Python interpreter is missing in manylinux entrypoint by @andife in https://github.com/onnx/onnx/pull/7926
fix: remove unnecessary git credentials in test job; guard proto size cast by @andife in https://github.com/onnx/onnx/pull/7931
Handle PathLike inputs consistently in infer_shapes by @Pratishtha5 in https://github.com/onnx/onnx/pull/7928
docs: add OpenVINO to RC partner validation checklist by @andife in https://github.com/onnx/onnx/pull/7927
Use scikit-build-core by @cbourjau in https://github.com/onnx/onnx/pull/7859
Fix duplicate tensor(float16) in Conv-11 type constraint by @cyyever in https://github.com/onnx/onnx/pull/7940
Speed up ReferenceEvaluator Resize via separable interpolation by @mrgyatso in https://github.com/onnx/onnx/pull/7920
Fix [#7944]: support NodeProto in printer.to_text by @mrgyatso in https://github.com/onnx/onnx/pull/7947
Add type_builders.h and migrate schema definitions to use it by @cyyever in https://github.com/onnx/onnx/pull/7945
Use commonpath for tar extraction validation by @NguyenCong2k in https://github.com/onnx/onnx/pull/7949
Validate tensor value count in make_tensor by @Pratishtha5 in https://github.com/onnx/onnx/pull/7954
Fix Resize reference op on 32-bit platforms by @cyyever in https://github.com/onnx/onnx/pull/7957
Use type DSL to improve operator schemas by @cyyever in https://github.com/onnx/onnx/pull/7956
Remove glob calls from ONNX CMake code by @Shadows-of-Fire in https://github.com/onnx/onnx/pull/7733
add overflow-safe integer multiplication by @cyyever in https://github.com/onnx/onnx/pull/7822
chore: correct Renovate docs link and manylinux example tag date by @Copilot in https://github.com/onnx/onnx/pull/7989
deduplicate duplicated kLargeDim constant in tensor_test.cc by @Copilot in https://github.com/onnx/onnx/pull/7975
Share generator for unary float math op schemas by @cyyever in https://github.com/onnx/onnx/pull/7969
ci: patch sbom.cdx.json with actual protobuf version and hash per build by @andife in https://github.com/onnx/onnx/pull/7987
Recommend onnx.parser for test cases in agent guidance files by @gramalingam in https://github.com/onnx/onnx/pull/7966
onnx: add LICENSE_NOTES.md by @threexc in https://github.com/onnx/onnx/pull/7864
Fix make_attribute_ref to set ref_attr_name by @devin-lai in https://github.com/onnx/onnx/pull/8009
fix: validate packed tensor dims against payload size in _unpack_4bit and _unpack_2bit by @andife in https://github.com/onnx/onnx/pull/8033
fix: validate packed sub-byte tensor payload size in checker by @andife in https://github.com/onnx/onnx/pull/8038