Fifty seasons is long enough that the show has outlived most of the arguments about it. What follows is a history told through the one thing the roster actually measures: who was standing there, and for how long.
The premise nobody expected to work
On 11 October 1975, NBC filled a Saturday-night hole, previously occupied by Tonight Show reruns, with ninety minutes of live sketch comedy out of Studio 8H at 30 Rockefeller Plaza. It was called NBC's Saturday Night, because ABC already had a variety show with Howard Cosell's name on it and the better title with it. George Carlin hosted. The producer was a 30-year-old Canadian named Lorne Michaels, and the cast was seven unknowns billed, with some accuracy, as the Not Ready for Prime Time Players.
The idea was not that the sketches would be funnier than everyone else's. The idea was that they would be live, and that being live in front of a young audience at 11:30 at night meant the show could say things the rest of television could not. That bet has been the whole franchise ever since. Everything else (the recurring characters, the celebrity hosts, the musical guests, the cold opens) is scaffolding around it.
What made the first cast work was that nobody in it was the star. John Belushi was the loudest and Chevy Chase got famous fastest, but the show was built as an ensemble, and the ensemble is the structural invention that let it survive its own cast. A star vehicle dies with its star. A repertory company replaces people.
1975–1980: the original company
The founding nine were Chevy Chase, Dan Aykroyd, John Belushi, Gilda Radner, Jane Curtin, Laraine Newman, Garrett Morris, and (for a single broadcast each in the first season) George Coe and the show's first head writer, Michael O'Donoghue. Bill Murray joined in 1977, replacing Chase, who had left after roughly a season and a half to become a movie star and did so.
That departure set the template for every crisis that followed. Chase left mid-run, the show absorbed it, and the replacement turned out to be one of the two or three most valuable performers the programme has ever had. The lesson the show has relearned every decade since is that the cast list is not the show. It is the current draft of the show.
By 1980 the founding company was gone. Michaels left with them, along with most of the writers, and NBC had a nine-year-old franchise with nobody in it.
1980–1985: the years it nearly died
Season six is the one everyone skips, and it is the most instructive season the show has ever produced. NBC handed the programme to Jean Doumanian, who hired an almost entirely new cast: Denny Dillon, Gail Matthius, Ann Risley, Charles Rocket, Gilbert Gottfried, Joe Piscopo, and a nineteen-year-old featured player named Eddie Murphy. The reviews were savage. In February 1981 Charles Rocket said a word on live network television that live network television did not then permit, and within weeks Doumanian and most of the cast were gone.
Dick Ebersol took over and did the unglamorous thing: he stopped pretending the 1975 formula could be restaged and rebuilt around the one performer who was obviously working. Eddie Murphy carried the show for three seasons more or less personally, and did it while also becoming a film star, which is a workload no cast member has attempted since. When he left in 1984, Ebersol responded by abandoning the unknowns-only principle altogether and hiring a season of ringers: Billy Crystal, Martin Short, Christopher Guest, Harry Shearer, Rich Hall. It was, by most accounts, a good season. It was also not really the same show, and Ebersol left after it.
What the Doumanian and Ebersol years actually proved is that the format is more durable than any of its supposed rules. A season without continuity, a season built on a single star, a season of established professionals. All three were survivable. The thing that nearly killed the show was not any of those. It was a full year of nobody being allowed to get good.
1985–1990: the rebuild that stuck
Michaels came back in 1985 to a cast he had partly inherited and partly assembled from names (Randy Quaid, Robert Downey Jr., Joan Cusack, Anthony Michael Hall), and it did not work. NBC came close to cancelling the show outright. Almost the entire company was replaced after one season. That 1985 intake of twelve was the second largest the show has ever made, behind only 1980, and nine of the twelve were gone a year later. The turnover is plainly visible as a cliff in the cast-size chart on the roster page.
The 1986 intake is the one that saved it: Dana Carvey, Phil Hartman, Jan Hooks, Kevin Nealon, Victoria Jackson, and A. Whitney Brown, joining Jon Lovitz, Nora Dunn, and Dennis Miller from the year before. Hartman in particular is the least replaceable person the show has ever had, for reasons that have nothing to do with fame. He could play the straight man in someone else's sketch so reliably that the writers stopped worrying about whether a premise would survive the read-through. The cast nickname for him was the Glue.
By the end of the decade the show had recovered something more useful than ratings: an apprenticeship structure. Featured players arrived, did two years of small parts, and either became repertory or left. That pipeline is why the cast-size chart stops swinging so wildly after 1986. The turnover never stops, but it stops happening all at once.
1990–1995: the boom, and the backlash
The early nineties cast was the most commercially successful in the show's history and got the worst press of any since 1981. Adam Sandler, Chris Farley, David Spade, Chris Rock, Rob Schneider, Mike Myers, Julia Sweeney, Ellen Cleghorne, and Tim Meadows made a version of the show that was enormously popular with people under 25 and increasingly disliked by everyone whose job was to write about it.
Two things were true at once, which is why the period is still argued about. The recurring-character format had genuinely hardened into formula: a catchphrase, a costume, a film deal. And the criticism of it was also a generational complaint dressed up as a standards complaint. Season twenty, in 1994–95, is generally agreed to be the low point, and it ended with a purge: Sandler and Farley were out, and so were most of the people around them.
Farley died in 1997, at 33. Phil Hartman was murdered in 1998. Gilda Radner had died in 1989, and John Belushi in 1982. The show's history carries a genuinely unusual amount of early death in it, and any account of the nineties that treats the 1995 firings as merely a creative correction is leaving out what actually happened to those people.
1995–2005: the professional era
The 1995 rebuild brought in Will Ferrell, Cheri Oteri, Molly Shannon, Darrell Hammond, Jim Breuer, Mark McKinney, and David Koechner, followed over the next two years by Ana Gasteyer, Chris Kattan, Tracy Morgan, and Colin Quinn. It worked quickly, and it worked by inverting the previous cast's instinct: instead of characters built to be quoted, characters built to be committed to. Ferrell's whole method was to play absurd premises with total sincerity and let the audience decide how long to hold out.
Darrell Hammond stayed fourteen seasons, which was the record for twenty years and is still tied for the second-longest run in the show's history, now level with Colin Jost. He is the clearest example of a role the show invented for itself somewhere in the nineties: the utility impressionist, the person who is not the star of any sketch and is in half of them.
The other structural change of this period happened off camera. Tina Fey became head writer in 1999, the first woman to hold the job, and moved to Weekend Update in 2000. The desk had been an anchor's chair since Chevy Chase; Fey and Jimmy Fallon, and then Fey and Amy Poehler, turned it into a two-person act, which is what it has stayed.
2005–2015: the internet arrives
In December 2005 the show put a filmed piece called "Lazy Sunday" on the air and, more consequentially, on a nine-month-old website called YouTube. It was watched millions of times by people who had not seen the broadcast, which was not something a sketch had previously been able to do.
The effect on the show was structural rather than tonal. Sketches stopped being disposable. A cold open could be a news event by Sunday morning, and a Digital Short could reach an audience twenty times the size of the live one. Andy Samberg, Bill Hader, Kristen Wiig, Jason Sudeikis, Fred Armisen, and Will Forte were the cast that this happened to, and it made the show relevant in a way that the ratings (which continued to drift downward, as all broadcast ratings did) completely failed to capture.
It also raised the cost of a bad sketch. A weak five minutes at 12:50am used to vanish. After 2006 it stayed up, permanently, with a comment section.
2014–present: the institution
In 2013 the show hired six new cast members, all of them white, and the resulting criticism was pointed enough that it prompted a mid-season audition process. Sasheer Zamata joined in January 2014; Leslie Jones and Michael Che were hired as writers around the same time and both moved to the cast. Che became the first Black Weekend Update anchor in the show's history. That is a long time for a first, in a programme that had been on the air for thirty-nine years.
The decade since has been the show's most politically saturated and its most stable. Kenan Thompson, who joined in 2003, passed Hammond's record and has now been in the cast for more than twenty seasons. That is longer than the entire original run of the Not Ready for Prime Time Players, the Doumanian season, the Ebersol years, and the 1986 rebuild put together. Colin Jost and Michael Che have anchored Update together for over a decade, which is general knowledge rather than a thing the roster records: it stores who has anchored, never when or for how long.
Then, in 2022, the show emptied out again: Kate McKinnon, Aidy Bryant, Kyle Mooney, and Pete Davidson left at the end of season 47, with Cecily Strong following mid-way through the next. It was the largest departure since 1995, and it happened for the ordinary reason rather than a dramatic one: a group of people who joined within a year of each other hit ten years within a year of each other. A second wave followed in 2025, taking Heidi Gardner, Ego Nwodim, and Bowen Yang.
The show turned fifty in 2025 and marked it with a prime-time special that filled Studio 8H with four decades of returning cast. It was a reunion, and reunions are what institutions have. Whether that is a compliment depends entirely on which season you happened to be seventeen.
What the numbers actually show
The roster page is a chart of turnover, and turnover is the show's actual subject. A hundred and seventy-four people have been in the cast. The median run is three seasons, and the average is four. The gap exists because a handful of very long tenures are pulling against a great many very short ones. Fifty-nine people, better than a third of everyone ever hired, lasted exactly one season.
The average-tenure line tells a story the anecdotes do not: the cast has been getting more experienced, more or less continuously, since the mid-eighties. The show that once replaced its entire company twice in six years now keeps people for a decade. Whether that is maturity or ossification is the argument, and both sides can point at the same line.
Dates and cast tenures on this site come from Wikipedia; the reading of them above is our own. Corrections are welcome at info@snlroster.com.