Fable 5 or Opus 4.8?

Each sample below is a piece of fiction written by either Fable 5 or Opus 4.8, prompted by the same generator. Read it and guess the model. (18 distinct samples — 10 Fable, 8 Opus — shuffled per session. Pre-story and post-story meta-commentary has been stripped; this is the fiction only.)

Sample 1 / 18 Score 0 / 0
Pick a model.
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