Subcite

Live fact-checks for YouTube: flags false and misleading claims the moment they are said, with sources.

Subcite fact-checks YouTube videos live, while you watch. When someone in a video makes a checkable claim — a statistic, a historical fact, a claim about how common something is — Subcite searches the web and tells you right then whether it’s false, misleading, true, or can’t be verified, with a source you can open. HOW IT WORKS • Open any YouTube video that has captions. Subcite reads the captions and checks claims about a minute ahead of where you’re watching, so results are ready the moment a claim is said. • When a false or misleading claim is said, a small pop-up shows the claim, the verdict, a one-line explanation and the source. Copy it with one click to double-check it yourself. • Prefer something subtler? Turn on the glow: the edge of the video softly lights up in the verdict’s color — red for false, orange for misleading, green for true, grey for can’t tell. • False claims get red markers on the progress bar, so you can jump back to them. • Click the Subcite label on the video to see every claim checked so far, with explanations and sources. BUILT FOR ACCURACY Subcite only calls a claim false when a real source directly contradicts it. The contradicting passage must come from a page the web search actually found, and a second, independent check must agree. Exaggeration, opinion and claims it can’t settle are labelled misleading or “can’t tell”, not false. RUNS ON YOUR CHATGPT PLAN Sign in with your ChatGPT Plus or Pro account — no API keys and no extra charges. Checks count toward your plan’s normal usage limits. If you reach a limit, Subcite pauses and tells you; it never switches to paid billing. PRIVATE BY DESIGN • Your ChatGPT sign-in is stored only in your browser. • Claims from the videos you watch are sent to OpenAI on your own account to be checked. • Subcite has no server of its own and doesn’t collect, store or sell your data. • It only checks the parts of videos you actually watch; pausing or leaving a video stops the checking. CUSTOMIZE IT Choose which verdicts pop up or glow, how strong the glow is, whether alerts come as a claim starts or when it ends, and whether false claims play a soft sound. GOOD TO KNOW • Requires a ChatGPT Plus or Pro plan. • Works on YouTube videos with captions (including auto-generated ones). Not for live streams. • The first minute or so of a video may not alert while checking catches up; those claims still appear in the list. • Subcite uses AI and web search, and it can be wrong. Treat it as a helpful second opinion and use the sources to check for yourself.