Hi Alex!

Yes, here is some positive quantitative feedback 
<https://github.com/webmachinelearning/meetings/blob/main/telcons/2025-02-26-cg-minutes.md#:~:text=Kenji:%20I%20can,what%20we%20can>we've
 
gathered via surveys as of February 2025 (similar to Translator API).
We've also publicly shared a more recent snapshot of feedback at BlinkOn: 
bit.ly/blinkon-2025-builtin-ai  (slide 34).
Origin Trial signups have been 5x higher than what we see from typical 
Origin Trials which suggest a lot of interest.
We also have third-party partners excited to launch with this API.

Best,
Ayu

On Wednesday, April 16, 2025 at 8:08:03 AM UTC-7 Alex Russell wrote:

> hey Ayu,
>
> Thanks for including the changes since the original intent. Great to see 
> things evolve while in OT.
>
> Has there been feedback on this so far? Anything y'all can share?
>
> Best,
>
> Alex
>
> On Tuesday, April 15, 2025 at 10:31:03 AM UTC-7 Ayu Ishii wrote:
>
>> Contact emails
>>
>> dome...@chromium.org, fer...@chromium.org, kenjibah...@chromium.org, 
>> m...@chromium.org, btri...@chromium.org, ds...@chromium.org, 
>> a...@chromium.org
>>
>> Explainer
>>
>>
>> https://github.com/explainers-by-googlers/writing-assistance-apis/blob/main/README.md
>>
>> Specification
>>
>>
>> https://webmachinelearning.github.io/writing-assistance-apis/#summarizer-api
>>  
>>
>> Summary
>>
>> A JavaScript API for producing summaries of input text, backed by an AI 
>> language model.
>>
>>
>> Blink component
>>
>> Blink>AI>Summarization 
>> <https://issues.chromium.org/issues?q=customfield1222907:%22Blink%3EAI%3ESummarization%22>
>>
>> TAG review
>>
>> https://github.com/w3ctag/design-reviews/issues/991
>>
>> TAG review status
>>
>> Pending
>>
>> Origin Trial Name
>>
>> Summarization API
>>
>> Chromium Trial Name
>>
>> AISummarizationAPI
>>
>> Origin Trial documentation link
>>
>> https://developer.chrome.com/docs/ai/summarizer-api 
>>
>> WebFeature UseCounter name
>>
>> kSummarizer_Summarize
>>
>> Risks
>>
>> Interoperability and Compatibility
>>
>> This feature has definite interoperability and compatibility risks, due 
>> to the likelihood that different implementations will use different 
>> language models, prompts, and fine-tunings, and even within a single 
>> implementation such as Chrome, these pieces will likely change over time. 
>> Additionally, not all browsers and operating systems will have a built-in 
>> language model to expose, and not all devices will be powerful enough to 
>> run one effectively.
>>
>> We are taking a variety of steps to attempt to mitigate these risks. For 
>> example, the specification is designed to allow the API to be backed by a 
>> cloud-based language model. This approach could extend the functionality to 
>> a wider range of devices and users. The API is designed to abstract away 
>> the specifics of the underlying language model, including prompts and 
>> fine-tuning. This prevents developers from relying on specific outputs, 
>> ensuring they receive a generalized summary rather than structured data 
>> that might vary across implementations. Finally, the API surface is 
>> designed with many clear points of failure, that encourage the developer to 
>> probe for capabilities ahead of time and fall back to other techniques if a 
>> capability is not available.
>>
>> Nevertheless, interoperability and compatibility risk remains high for 
>> these sorts of APIs, and we'll be closely monitoring it during the 
>> experimentation period.
>>
>>
>> Gecko: Defer (https://github.com/mozilla/standards-positions/issues/1067)
>>
>> WebKit: No signal (
>> https://github.com/WebKit/standards-positions/issues/393)
>>
>> Web developers: Mixed signals (
>> https://github.com/WICG/proposals/issues/163) Prototyping with partners 
>> behind a flag revealed enthusiasm and many prototypes built, from which we 
>> drew the discussion of potential use cases [1]. Feedback on the WICG thread 
>> was more mixed. Some themes we saw include: asking for more capabilities 
>> (e.g. full prompting of a language model instead of higher-level APIs (our 
>> response at [2]); multi-modal support); desire to make sure the API 
>> actually works robustly in many real-world use cases; removal of any 
>> safety/ethical safeguards; and confusion about client-side vs. cloud APIs. 
>> [1]: 
>> https://github.com/WICG/writing-assistance-apis/blob/main/README.md#summarizer-api
>>  
>> [2]: 
>> https://github.com/WICG/writing-assistance-apis/blob/main/README.md#directly-exposing-a-prompt-api
>>
>> Other signals:
>>
>> Activation
>>
>> This feature would definitely benefit from having polyfills, backed by 
>> any of: cloud services, lazily-loaded client-side models using WebGPU, or 
>> the web developer's own server. We anticipate seeing an ecosystem of such 
>> polyfills grow as more developers experiment with this API.
>>
>>
>> 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?
>>
>> None
>>
>>
>> Goals for experimentation
>> We're most interested in feedback on whether the summarization quality we 
>> can provide is useful to sites, and whether the options we've defined for 
>> controlling the summarization are useful. Additionally, we want to learn 
>> about the impact of the current API's limitations, e.g. maximum input 
>> length, to determine where we should spend our best effort lifting those 
>> limits.
>> The origin trial will be limited to English-language input to start. We 
>> are hoping to add support for more languages over time. Learning how much 
>> of a limitation this is, and which languages ought to be prioritized, will 
>> also be helpful.
>> Finally, we're also interested in feedback about the API shape and ease 
>> of use.
>>
>> Reason this experiment is being extended
>>
>> Since the start of Origin Trial we've incorporated developer feedback and 
>> have iterated on API shape, making several breaking changes. We would like 
>> to continue experimenting and collect feedback on the new shape before 
>> launch.
>>
>> Progress since the original intent includes:
>>
>>    - 
>>    
>>    Spec: Spec 
>>    
>> <https://webmachinelearning.github.io/writing-assistance-apis/#summarizer-api>
>>  
>>    is now complete
>>    - 
>>    
>>    TAG review: Still pending 
>>    <https://github.com/w3ctag/design-reviews/issues/991>
>>    - 
>>    
>>    Signals requests: Firefox has updated to defer 
>>    <https://github.com/mozilla/standards-positions/issues/1067>
>>    - 
>>    
>>    Outreach for feedback from spec community: This API has been 
>>    discussed at Web ML Community Group meetings.
>>    - 
>>    
>>    WPT tests: We’ve added some basic WPT tests 
>>    
>> <https://source.chromium.org/chromium/chromium/src/+/main:third_party/blink/web_tests/external/wpt/ai/summarizer/>
>>    
>> API interface updates made since original intent:
>>
>>    - 
>>    
>>    Removed the “ai” namespace 
>>    <https://github.com/webmachinelearning/writing-assistance-apis/issues/9>
>>    - 
>>    
>>    Updating model availability values 
>>    <https://github.com/webmachinelearning/writing-assistance-apis/issues/29>
>>    - 
>>    
>>    Updating interface for availability testing and expected language 
>>    options 
>>    <https://github.com/webmachinelearning/writing-assistance-apis/pull/22>
>>    - 
>>    
>>    Adding permissions policies & removing worker support 
>>    <https://github.com/webmachinelearning/writing-assistance-apis/pull/46>
>>    - 
>>    
>>    Updating values for model download progress 
>>    <https://github.com/webmachinelearning/writing-assistance-apis/pull/30>
>>    
>>
>> Ongoing technical constraints
>>
>> None.
>>
>>
>> Debuggability
>>
>> It is possible that giving DevTools more insight into the 
>> nondeterministic states of the model, e.g. random seeds, could help with 
>> debugging. See related discussion at 
>> https://github.com/explainers-by-googlers/prompt-api/issues/9.
>>
>>
>> Will this feature be supported on all six Blink platforms (Windows, Mac, 
>> Linux, ChromeOS, Android, and Android WebView)?
>>
>> No
>>
>> Not all platforms will come with a language model. In particular, in the 
>> initial stages we are focusing on Windows, Mac, and Linux.
>>
>>
>> Is this feature fully tested by web-platform-tests 
>> <https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md>
>> ?
>>
>> No
>>
>> We have added some web platform test coverage for this feature (
>> https://wpt.fyi/results/ai/summarizer?label=experimental&label=master&aligned),
>>  
>> and plan to expand coverage of the API surface over the course of the 
>> Origin Trial. How much we are able to test beyond the surface API is 
>> unclear, given the nondeterministic nature of the output. The explainer 
>> discusses this in 
>> https://github.com/WICG/writing-assistance-apis/blob/main/README.md#specifications-and-tests
>> .
>>
>>
>> Flag name on about://flags
>>
>> summarization-api-for-gemini-nano
>>
>> Finch feature name
>>
>> EnableAISummarizationAPI
>>
>> Requires code in //chrome?
>>
>> True
>>
>> Tracking bug
>>
>> https://issues.chromium.org/issues/351744634
>>
>> Estimated milestones
>>
>> Origin trial desktop first
>>
>> 131
>>
>> Origin trial desktop last
>>
>> 136
>>
>> Origin trial extension 1 end milestone
>>
>> 139
>>
>> DevTrial on desktop
>>
>> 129
>>
>>
>> Link to entry on the Chrome Platform Status
>>
>> https://chromestatus.com/feature/5193953788559360
>>
>> Links to previous Intent discussions
>>
>> Intent to Prototype: 
>> https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAM0wra8iMt24s_jP9Ng9_RKU3cH4wFywAt00kitJCeMJ3CaUAw%40mail.gmail.com
>>
>> Intent to Experiment: 
>> https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAM0wra8d6bZo%2B9-8Rum0N%3D4oFpwVfquqAzRC7mu1GTyVeDWw5A%40mail.gmail.com
>>
>>

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