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Hayawakari is an overseas YouTube video summarization and translation service provided by kozoinnovation, primarily aimed at Japanese-speaking users. Through a Chrome extension, it can fetch subtitles from a YouTube page with one click, use AI to generate structured Japanese summaries, and further analyze the comments section to surface high-value comments such as expert additions, counterarguments, and practical experiences.
Its core value is not just “video summarization,” but connecting the video content, comments section, and follow-up content creation into one workflow: it supports automatic subtitle extraction, Japanese translation, structured summary article generation, dashboard-based history management, and, on higher-tier plans, generation of X threads/posts and short-video scripts. It is suitable for business professionals, researchers, investors, and content creators who need to quickly track overseas information. However, the site does not disclose the specific AI model used, context limits, accuracy testing, or whether custom prompts are supported.
The Free plan costs 0 yen/month and includes 5 summaries per month plus access to selected comments, but it does not allow article generation. Lite costs 980 yen/month and includes 30 summaries and 10 article generations. Growth costs 4,980 yen/month and includes 100 summaries, 50 article generations, plus X post and short-video script generation. Paid plans are billed monthly via Stripe, and the terms state that cancellations are not refunded on a prorated daily basis.
Its strengths are a clear user flow and a Chrome extension that lowers the operational barrier. Comment analysis is a differentiated highlight, helping supplement perspectives beyond the video’s main content. The drawbacks are that its output and positioning are clearly Japanese-oriented, and Chinese-language support is not specified. The terms also state that AI summaries and translations may contain errors, with no guarantee of accuracy, completeness, or continuity. Privacy, data retention, model API usage, and whether data is used for training are not sufficiently explained in the captured text.
Hayawakari is best suited to users who need to read first-hand information from overseas YouTube videos but mainly consume content in Japanese. Users in mainland China also need to consider YouTube’s own access restrictions. Hayawakari’s site connectivity and payment availability could not be confirmed from the available text, so its access status from China is unknown. If you prefer a Chinese-language workflow, you may consider using domestic large-model tools together with subtitle text, or using other YouTube summarization plugins as alternatives.
⚠ This review is compiled from public sources and does not constitute a purchase recommendation. Verify all facts on the vendor's official site. Verify on hayawakari.info official site.
hayawakari.info is an Japan AI Apps provider. TG4G tracks its product information, an overall rating of 7.0/10, and a China-accessibility score of Workable. Click "Visit Official Site" to reach hayawakari.info directly.