The gang is in a never-ending story. 

“It’s Always Sunny in Philadelphia” has been on the air for a record 20 years, running for more seasons than any other live-action sitcom. Now, star Glenn Howerton is weighing in on whether he sees an ending in sight.

“It’s hard to say. It changes often, season to season,” he exclusively told The Post while promoting his new Netflix series, “Sirens.”

“It’s Always Sunny in Philadelphia” premiered in 2005 on FX, following a group of narcissistic and sociopathic friends who run a dive bar in the titular city. 

There’s Dennis (Howerton), his sister Dee (Kaitlin Olson), their father Frank (Danny DeVito) and their friends Charlie (Charlie Day) and Mac (Rob McElhenney).

With two decades under its belt, does the show have a conclusion on the horizon? 

“There are some seasons where we’re like, ‘Oh, I can’t do this anymore.’ But there are other seasons where everyone is just really stoked and excited to be there, and excited to get the opportunity to continue exploring these insane characters in this insane world,” Howerton explained. “We were quite invigorated this year. So, I think we’re just taking it year by year.” 

After each season, we “check in with ourselves,” he noted.

“We never like to have those conversations about what the future of the show is when we finish a season. Because that’s when we are like, ‘Yeah, I’m done. I can’t do this anymore.’ It’s always good to take a couple months off, and then have that conversation, like, ‘Do we want to keep going?’” 

Their careers have all taken off since the show first premiered in 2005.

Olson is now in the Emmy-winning HBO series Hacks” and “High Potential.” McElhenney (who she’s married to) had his Apple show “Mythic Quest” and his docuseries with Ryan Reynolds, “Welcome to Wrexham.” Day has been in movies such as “Horrible Bosses” and “Pacific Rim,” and Howerton has led his NBC / Peacock sitcom, “A.P. Bio” (which ran from 2018 to 2021). 

But, Howerton said, the “Sunny” cast is not planning to leave for greener pastures on a permanent basis. 

“We’re still having such a blast working with each other. And, there seems to be endless ways to explore the world through these characters. So, we have no intention of stopping anytime soon.” 

Season 17 will premiere July 9 on FXX and stream the next day on Hulu.