The Origin Trial will start in M-146 and run through M-148. Developers can sign up for trial keys:
- Chrome: https://developer.chrome.com/origintrials/#/view_trial/2250110963824984065 - Edge: https://developer.microsoft.com/en-us/microsoft-edge/origin-trials/trials/19857284-cf52-484b-8b09-8ca50ac9dccb Reilly Grant | Software Engineer | [email protected] | Google Chrome <https://www.google.com/chrome> On Mon, Jan 5, 2026 at 7:29 PM Reilly Grant <[email protected]> wrote: > Due to release-blocking issues, we are delaying the start of the Origin > Trial by at least a release. I will update this thread when we have a new > starting milestone. > Reilly Grant | Software Engineer | [email protected] | Google Chrome > <https://www.google.com/chrome> > > > On Fri, Dec 19, 2025 at 1:09 PM Rick Byers <[email protected]> wrote: > >> Glad to see this in OT, hope to see some cool things in the wild soon! >> LGTM to experiment 145-147 inclusive. >> >> On Fri, Dec 19, 2025 at 2:52 PM Reilly Grant <[email protected]> >> wrote: >> >>> On Friday, December 19, 2025 at 11:50:19 AM UTC-8 Chromestatus wrote: >>> >>> *Contact emails* >>> [email protected], [email protected], [email protected], >>> [email protected] >>> >>> *Explainer* >>> https://github.com/webmachinelearning/webnn/blob/main/explainer.md >>> >>> *Specification* >>> https://webmachinelearning.github.io/webnn >>> >>> *Design docs* >>> >>> https://docs.google.com/document/d/1kIc5NO1PU1DbGHKOsnan- >>> tEhV01L6_K3OLA5g0o4Ts4/edit?resourcekey=0-ltUDiDZqxKgARhtNqsGJeg >>> >>> *Summary* >>> WebNN seeks to enable web applications and frameworks to take advantage >>> of native operating system services for machine learning and the underlying >>> hardware capabilities available on a user's computer to implement >>> consistent, efficient, and reliable ML experiences on the web. >>> >>> *Blink component* >>> Blink>WebML >>> <https://issues.chromium.org/issues?q=customfield1222907:%22Blink%3EWebML%22> >>> >>> *Web Feature ID* >>> webnn <https://webstatus.dev/features/webnn> >>> >>> *TAG review* >>> https://github.com/w3ctag/design-reviews/issues/933 >>> >>> *TAG review status* >>> Issues addressed >>> >>> *Origin Trial documentation link* >>> https://webnn.io/en/learn/get-started/quickstart >>> >>> *Risks* >>> >>> >>> *Interoperability and Compatibility* >>> Aside from the risk that other browsers do not implement (which is >>> trending towards unlikely given that Edge is planning to ship alongside >>> Chrome and Firefox is planning to implement) the primary interoperability >>> risk is that a WebNN implementation needs to abstract over the ML >>> acceleration capabilities of the underlying platform and hardware. The >>> specification mitigates this risk by defining a set of ML operations which >>> must be supported and provides a feature detection mechanism for >>> discovering additional operations that may be optionally supported. This >>> allows developers to write broadly interoperable code by using only the >>> required operations or design their applications to adapt to additional >>> capabilities at runtime. >>> >>> *Gecko*: Positive (https://github.com/mozilla/standards-positions/ >>> issues/1215#issuecomment-3520278819) >>> >>> *WebKit*: No signal (https://github.com/WebKit/standards-positions/ >>> issues/486) Apple is participating in the WebML WG but has made no >>> public statements about implementation. >>> >>> *Web developers*: Positive Microsoft's ONNX runtime includes an >>> execution provider for WebNN (https://onnxruntime.ai/docs/ >>> tutorials/web/ep-webnn.html). Google's LiteRT.js framework has >>> announced that they are working on WebNN support ( >>> https://youtu.be/HAjotVloAvI?t=219). >>> >>> *Other signals*: The WebNN implementation in Chromium is a >>> collaboration between Google, Intel, and Microsoft. Edge will be launching >>> WebNN at the same time as Chrome. >>> >>> *Ergonomics* >>> For some use cases, particularly real-time ML processing of video, >>> integration between WebNN and WebGPU is required. Support for this has been >>> prototyped on some platforms as an `exportToGPU()` method that takes an >>> `MLTensor` and makes it available as a `GPUBuffer` but this is not yet >>> available on all platforms. >>> >>> *Activation* >>> Most developers don't write JavaScript or WebGPU shader code to execute >>> their ML models by hand. Instead frameworks such as LiteRT.js, ONNX Runtime >>> Web, WebLLM or Transformers.js are used. Support for WebNN in these >>> frameworks (already starting to appear) will be a large factor in the >>> adoption of this API. >>> >>> *Security* >>> The primary security risk is exposing the underlying platform frameworks >>> to potentially malicious content. This is mitigated through sandboxing of >>> the GPU process and fuzz testing. The risks are similar to WebGPU, though >>> the expressiveness of WebNN is lower than WGSL. >>> >>> *WebView application risks* >>> >>> Does this intent deprecate or change behavior of existing APIs, such >>> that it has potentially high risk for Android WebView-based applications? >>> This is a new API. >>> >>> >>> *Goals for experimentation* >>> *No information provided* >>> >>> >>> Due to GoogleChrome/chromium-dashboard#4155 >>> <https://github.com/GoogleChrome/chromium-dashboard/issues/4155> this >>> wasn't filled in. It should read: >>> >>> The goal of this experiment is to understand how well real-world models >>> abstract to the operations supported by WebNN and how well WebNN can map >>> these operations to those supported by the hardware of real-world users. >>> >>> >>> *Ongoing technical constraints* >>> WebNN can currently execute models on CPU across all platforms but >>> support for GPU and NPU execution is more limited. This will expand as >>> development continues. >>> >>> *Debuggability* >>> There is currently no special DevTools support for this API beyond >>> regular JavaScript debugging. A feature we have considered (and prototyped >>> via an internal extension and the --webnn-coreml-dump-model, >>> --webnn-ort-dump-model, and --webnn-tflite-dump-model browser flags) is >>> inspecting graphs constructed by a site and exporting them in the >>> underlying platform format so that they can be inspected with other tools. >>> >>> *Will this feature be supported on all six Blink platforms (Windows, >>> Mac, Linux, ChromeOS, Android, and Android WebView)?* >>> Yes >>> >>> *Is this feature fully tested by web-platform-tests >>> <https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md>?* >>> Yes >>> https://wpt.fyi/results/webnn?label=master&label= >>> experimental&aligned&q=webnn >>> >>> *DevTrial instructions* >>> https://webnn.io/en/learn/get-started/installation >>> >>> *Flag name on about://flags* >>> web-machine-learning-neural-network >>> >>> *Finch feature name* >>> WebMachineLearningNeuralNetwork >>> >>> *Requires code in //chrome?* >>> True >>> >>> *Tracking bug* >>> https://issues.chromium.org/issues/40206287 >>> >>> *Estimated milestones* >>> Origin trial desktop first145 Origin trial desktop last147 DevTrial on >>> desktop125 Origin trial Android first145 Origin trial Android last147 >>> DevTrial >>> on Android125 Origin trial WebView first145 Origin trial WebView last147 >>> >>> *Link to entry on the Chrome Platform Status* >>> https://chromestatus.com/feature/5176273954144256?gate=5186064701194240 >>> >>> *Links to previous Intent discussions* >>> Intent to Prototype: https://groups.google.com/a/ >>> chromium.org/g/blink-dev/c/PD6TDMDS9mg >>> >>> >>> This intent message was generated by Chrome Platform Status >>> <https://chromestatus.com>. >>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "blink-dev" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to [email protected]. >>> To view this discussion visit >>> https://groups.google.com/a/chromium.org/d/msgid/blink-dev/70b6585e-7685-45d6-9507-dbbf586799ecn%40chromium.org >>> <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/70b6585e-7685-45d6-9507-dbbf586799ecn%40chromium.org?utm_medium=email&utm_source=footer> >>> . >>> >> -- You received this message because you are subscribed to the Google Groups "blink-dev" group. 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