The Seattle Post-Intelligencer is poised to produce its final print edition today and then become an Internet-only news source, making it the largest U.S. newspaper to take that leap thus far. Only about 20 people will run the newsroom that used to employ 165. The website will include less of the original reporting characteristic of the print edition and instead feature extensive commentary, advice, and links to other news sites.

The P-I lost $14 million last year, according to [the Hearst corporation], and its transition to an all-digital product will be closely watched in an industry that is fast losing revenue, is casting around for a new economic model and still relies on print for about 90 percent of its revenue. The company recently instructed all of its newspapers to look for ways to charge for digital content — on mobile devices, if not online.

“We clearly believe we are in a period of innovation and experimentation, and that’s what this new SeattlePI.comrepresents,” said Steven R. Swartz, president of Hearst’s newspaper division. “We think we’ll learn a lot, and we think the Seattle market, being so digitally focused, is a great place to try this.”