I have heard there is a difference between movies 'based on' verses those 'inspired by' true events. Does one relationship with the 'true events' have more license than another, or is it just the director's discretion as to which phrase to use?

  • 3
    If you translate from marketing speech to English, both phrases mean "not a true story" and the problem goes away. – dmckee Feb 23 '11 at 17:46
  • Based on a true story! The names have been changed to protect the innocent, and some events have been modified for dramatization, and of course all dialogue is made-up anyway, but our screenwriter got the idea from an actual story that someone told him! – mmyers Feb 23 '11 at 17:55
  • @mmyers: Don't forget that it's also been reformatted to fit your screen. – oosterwal Feb 23 '11 at 21:31
  • @oosterwal Edited for content and length, too. – dmckee Feb 24 '11 at 0:19

Both are sufficiently vague that the author can use them however he/she wants. Both wordings could mean anything from "nothing like the actual events" on up to "exactly like the actual events".

So the director / author can and will decide which best fits their marketing motivations, in a matter of connotation and style.

I could imagine that a more artistic movie would use the term "inspired by", and an action movie would connect better with "based on" for example.

Outside the context of art, I think "based on" does imply a closer resemblance to fact.

  • Inspired by, means your story's idea came from a real story. Based on means it is well... based on the real story. However I'd still Google any movie saying that to get the actual story rather than the movie version. Something you can keep in mind, I've never seen "Inspired by the book", only "Based on the book". – Brett Allen Feb 23 '11 at 20:53
  • A more cynical viewpoint would be that 'inspired by' actually affords the film-makers greater license to stay closer to the original story without getting into trouble when they deviate for dramatic effect... they can always claim that they were simply 'inspired' by the true events and the fact that their film is an inaccurate facsimile of true events is not libelous – Dancrumb Feb 24 '11 at 0:51

In common use, based upon a true story means that the essential trajectory of the actual story remains intact. The author/screenwriter may have made significant adaptations -- renaming characters, shifting the location in time or space, exchanging genders, compositing several real people into a single representative character, and so forth -- but the core of the story remains the same.

Inspired by a true story, on the other hand, generally means that an actual event was used only as a sort of springboard for the finished work; a "what if" scenario, if you will. Often some very significant changes are made -- the murderer hanged in real life may get away with the crime, or vice versa. It is often an indication that the writer is using a situation familiar to the audience as a stepping stone to exploring an issue they might not otherwise have considered.


Presumably the courts might look slightly more kindly upon your lawsuit if my film about an evil super-villain was advertised as being based on your life story rather than being merely inspired by it.

  • I agree: "based upon" is truthier. – horatio Feb 23 '11 at 18:11

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