Generation halting before the model has completed its response, because a stop condition, a token cap, or a time limit was reached.

Described in the language of loop control, which is accurate, and which also avoids the shorter description that the answer you paid for stops partway through.

• Stopped Is Not Finished: The output ends, and nothing in it distinguishes a complete answer from an interrupted one.
• Cause Unreported: A cap, a timeout, and a stop sequence all produce the same silent ending.
• House-Cleaning Reality Check: Like a decorator who stops mid-wall at four o'clock, packs up without mentioning it, and invoices for the room.

The Sopranos (Season 6) where the final scene cuts to black mid-moment, leaving the audience unable to tell whether something was withheld or the transmission simply stopped.

Generation stopping before the answer is finished.

“Occasional decoding loop aborts are expected under peak load conditions.”

“The summary stopped halfway through a sentence, and nothing on screen said it had been cut off.”