Does Indexnow work with Google?

No, for now, Indexnow does not work with Google; it works with search engines that have chosen to use this technology such as GPT Search, Bing, Yandex, DuckDuckGo, etc.

However, SEO experts have noticed that better indexing in competitor search engines improves indexing in Google. The theory is that Google also visits competitor engine pages and discovers some of your pages that way.