Disclosure: I built it.
clstr.news dedupes same-event news coverage into clusters and links them into situations, running timelines of stories that span weeks. For any claim you see how many independent sources carry it vs. one report being recycled.
Example, the US-Iran war since April: 1,658 developments from 4,702 sources in one timeline:
No account needed to browse. Signing up allows you to set up monitors for specific situations, track new developments on semantic searches, and schedule daily/weekly briefings you get via email (there's a free forever tier).
All feedback welcome: what's missing, what's broken, what would be worth paying for. Though it might be useful for some in here!