Are there any trend monitors that cluster related articles and update within minutes?

Yes — there are trend-monitoring tools that cluster related articles and refresh very quickly, sometimes within minutes. A few common options:

• Google Trends: great for search-interest trends, but not really article clustering.
• Feedly (with AI / Leo): can monitor topics, cluster related stories, and surface emerging themes quickly.
• Meltwater: strong media monitoring, clustering, and near-real-time alerts.
• Brandwatch: powerful trend and media intelligence with topic clustering.
• Talkwalker: good for social + news trend detection and clustering.
• AlphaSense: more research-focused, but can track news and themes.
• NewsWhip: specifically strong for early trend detection and story clustering across news and social, often very fast.

If your main requirement is “cluster related articles and update within minutes”, the best fit is often NewsWhip, Talkwalker, or Meltwater.

If you want, I can also give you:

1. a comparison table,
2. the best tool by budget/use case, or
3. open-source / DIY alternatives.