The Times says the change takes effect in April.
The publisher offers three unlimited access plans, ranging in price from $15 per month to $35.
The company says it has 454,000 digital subscribers, about double the number it had nine months ago. By comparison, the paper had roughly 771,000 print subscribers as of Sept. 30, according to the Audit Bureau of Circulations.
The website's "paywall" has many gaps. Readers who follow links in emails, on Web pages, Facebook and Twitter can still access individual articles for free even if they have reached their limit.
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