The system, which will be provided free to media groups including social media sites, is being tested by The Economist, The Guardian, The New York Times and Wikipedia.
Many news organisations have closed down their comments sections for lack of sufficient human resources to monitor the postings for abusive content.
“We hope we can help improve conversations online,” Cohen said.
Google has been testing the tool since September with The New York Times, which wanted to find a way to maintain a “civil and thoughtful” atmosphere in reader comment sections.
