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AI Sensei (baduk-ai.com) is an online Go AI review and training tool. After users upload game records in formats such as SGF, GIB, NGF, UGF, and UGI, the system analyzes them in the cloud using KataGo, marks mistakes on a web-based board, and shows AI-recommended variations. It also offers real-time variation exploration, quiz-based training, community discussion, and shareable review links. Its positioning is very clear: helping Go players learn from their own games more efficiently.
Its core engine is KataGo. According to the official description, the free analysis quality is already superhuman in most cases, but with low playouts it may still misjudge complex life-and-death positions. Paid tiers improve accuracy and variation depth through higher playout counts. Reviews are usually completed within a few minutes, and a single game can use up to 10 high-performance machines in parallel. No installation is required, and it works in browsers, on tablets, and on phones, making it suitable for uploading and analyzing games immediately after a match. Features such as keyboard shortcuts, filtering mistakes by Black or White, win-rate/score display, hints and answers for problems all suggest that it is not only an analysis tool, but also leans toward being a training platform.
The free tier provides 50 playouts and around 4 moves of variation, suitable for trying the service or occasional use. Basic costs USD 5.95/month or EUR 4.95/month, with 500 playouts and around 10 moves of variation. Dan costs USD 11.95/month or EUR 9.95/month, with 2500 playouts and around 15 moves of variation. Pro costs USD 27.95/month or EUR 24.95/month, with 10000 playouts and around 18 moves of variation. You can switch back to the free tier to cancel, and the paid plan remains active until the end of the billing cycle.
Its strengths are a low barrier to entry, mobile-friendly usage, support for multiple game-record formats, permanent storage of reviews with shareable links, and a free tier for trial use. The downsides are that the official site does not disclose an API, and Chinese-language support is not mentioned. AI conclusions can still be wrong, especially on the free tier where reading depth is limited, so it cannot replace a teacher or systematic study of Go theory.
It is suitable for Go enthusiasts, dan-level aspirants, teachers giving game commentary, and users reviewing games after tournaments or livestreamed matches. The main content does not specify access conditions or payment methods for mainland China, so china_access can only be considered unknown. If access or payment is inconvenient, alternatives include local KataGo deployment, Lizzie, Sabaki+KataGo, or built-in review features on domestic Go platforms.
⚠ 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 baduk-ai.com official site.
baduk-ai.com is an Japan AI Apps provider. TG4G tracks its product information, an overall rating of 6.0/10, and a China-accessibility score of Workable. Click "Visit Official Site" to reach baduk-ai.com directly.