- The film is the first five years after "Thunder in the Earth", photographer Roger Diggins once again collaborated with the Coen brothers. The works of the Coen brothers, with the exception of the "Drunken Country Folk Songs" in the middle, were shot by Bruno Del Bonnell, and almost all of them were photographers by Roger Diggins.
- Joel Cohen’s wife Francis McDomond appeared in the Cohen Brothers film for the eighth time.
- The film is the fifth film that Channing Tatum and Jonah Hill have collaborated with after "Dragon and Tiger Boys", "End of the World", "Lego Movie" and "Dragon and Tiger Boys 2".
- The film company "Capitol Pictures" in the film is fictitious, but it also appeared in the 1991 work "Barton Funk" by the Coen Brothers.
- Also filmed on the same set at the same time as "Long Live Caesar" is the TV series "Los Angeles Series" directed by James Franco.
Hail, Caesar! behind the scenes gags
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Eddie Mannix: Baird Whitlock has been kidnapped.
Hobie Doyle: This is bad. Bad for movie stars everywhere.
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Protestant Clergyman: Who plays Christ?
Eddie Mannix: A kid we're all very excited about, Todd Hocheiser, a wonderful young actor we found in Akron, Ohio, after a nationwide talent hunt. But Hocheiser is seen only fleetingly and with extreme taste. Our story is told through the eyes of a Roman tribune, Autochlus Antonius, an ordinary man, skeptical at first, but who comes to a grudging respect for this swell figure from the East.