A source tells The Hollywood Reporter, however, that an endgame isn't set in stone yet.

One of the stars of Better Call Saul says the end of the AMC series is approaching.

Giancarlo Esposito said the Breaking Bad prequel, which is currently in production on its fifth season, will wrap up after a sixth. That would put it about the same length as its predecessor, which ran for 62 episodes over five seasons (with the fifth broken into two halves aired roughly a year apart).

"It's tricky with [co-creator Vince Gilligan]," the actor said in an interview with Collider. "If you look at the Breaking Bad model, he said five years, five seasons, but it was really five and six" with the split final season.

As for Better Call Saul, "There will be six seasons," Esposito said. "It seems like that's the way, the comfortable way, to end this show."

AMC declined comment. Sources told The Hollywood Reporter, however, that a plan for the show's endgame is by no means set in stone.

Better Call Saul is set several years before the events of Breaking Bad and chronicles the life of Bob Odenkirk's character as he morphs the basically decent Jimmy McGill to criminal lawyer — emphasis on "criminal" — Saul Goodman.

The show's fourth season ended with Jimmy announcing he would start practicing law under a different name, signaling his turn toward Saul. Following the season finale, co-creator Peter Gould told THR that while the series "feels like we're closer to the end than to the beginning," he didn't have a firm ending in mind.

"Before season five is over, I think we'll have a very clear idea of how much further we've got to do," Gould said.

Season five of Better Call Saul isn't expected to air on AMC until early 2020.