Thanks for the update
Sampling parameters like temperature and topK are essential for real world use cases Low temperature works well for classification and structured outputs Higher values improve creativity in generative tasks It would be useful to also explore support for topP for better control across different model types Consistency and debuggability are important especially for production use Having better visibility into sampling behavior inside DevTools would help Looking forward to testing this in real browser based AI tools في الخميس، 2 أبريل 2026 في تمام الساعة 1:42:11 ص UTC+2، كتب Mike Taylor رسالة نصها: LGTM to experiment from M148 to M153 inclusive. On 4/1/26 3:41 p.m., Deepti Bogadi wrote: Contact emails [email protected], [email protected], [email protected] Explainer https://github.com/webmachinelearning/prompt-api?tab=readme-ov-file#sampling-parameters Specification https://webmachinelearning.github.io/prompt-api/ Summary Adds sampling parameters to the Prompt API. These control how tokens are sampled from the model, giving developers control over the "creativeness" or "randomness" of the output. Additionally, it adds attributes to the LanguageModel instance to read the set values, as well as a static LanguageModel function to get the default and max values of these parameters. The first implementation adds `temperature` and `topK` parameters. Blink component Blink>AI>Prompt <https://issues.chromium.org/issues?q=customfield1222907:%22Blink%3EAI%3EPrompt%22> Web Feature ID https://github.com/web-platform-dx/web-features/issues/3530 TAG review https://github.com/w3ctag/design-reviews/issues/1093 TAG review status Lack of consensus Goals for experimentation topK and temperature parameters were excluded from the initial Prompt API launch due to interoperability concerns. Developers have expressed value in tuning parameters, for testing and use-case specific optimization. Our goal for experimentation is to explore different params or options that satisfy developer requirements and mitigate interoperability concerns. Risks Interoperability and Compatibility We currently only support top-k and temperature while other models may use other sampling parameters such as top-p. This experiment is part of an exploration to get these sampling parameters right. Gecko: No signal WebKit: No signal Web developers: Several partners are using non-default temperatures (e.g. low temperature for classification use cases or better adherence to structured output constraints), and we also observed how adjusting temperature can improve accuracy for specific use cases. Other signals: 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 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, for the initial stages of the Prompt API, we will support Windows, Mac, Linux, and ChromeOS. Is this feature fully tested by web-platform-tests <https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md> ? No; The API shape is fully tested, but it is difficult to test the effects it has on the model’s response as it is non-deterministic. Flag name on about://flags None Finch feature name AIPromptAPIParams Requires code in //chrome? True Tracking bug https://crbug.com/496663356 Launch bug https://launch.corp.google.com/launch/4463387 Estimated milestones Origin trial desktop first 148 Origin trial desktop last 153 Link to entry on the Chrome Platform Status https://chromestatus.com/feature/6325545693478912 <https://chromestatus.com/feature/6325545693478912?gate=5966406430621696> 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/CAJcT_ZhwQ5AbE47ad2jpDHAH5wFKsko0boYjbinvHpANbqF-Jw%40mail.gmail.com <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAJcT_ZhwQ5AbE47ad2jpDHAH5wFKsko0boYjbinvHpANbqF-Jw%40mail.gmail.com?utm_medium=email&utm_source=footer> . -- 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/44a7baa1-cf94-4946-a4c1-0067152dbcf5n%40chromium.org.
