The most common and most likely answer to this crossword clue is the 10 letter word ARCHETYPES
I've seen this crossword clue in The Daily Telegraph
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Buddy explains!
The straight part
We know that "Original models" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case original models = archetypes.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does ARCHETYPES mean?
ARCHETYPES noun- An original model of which all other similar concepts, objects, or persons are merely copied, derivative, emulated, or patterned; a prototype.
- An ideal example of something; a quintessence.
- A character, object, or story that is based on a known character, object, or story.
- According to Swiss psychologist Carl Jung: a universal pattern of thought, present in an individual's unconscious, inherited from the past collective experience of humanity.
- (textual criticism) A protograph.
- To depict as, model using, or otherwise associate an object or subject with an archetype.