Acceptance-Rejection Mechanism for Speculative Decoding

A text-generation model has produced the sequence 'The quick brown fox'. The model is now at the 4th position (after 'fox') and is predicting the next word in the sequence. It predicts the word 'jumps' will appear at the 5th position. Which of the following expressions correctly represents the probability assigned by the model to this specific prediction?

Rejection Criterion in Speculative Sampling

Interpreting a Weather Forecasting Model's Output

Condition for Accepting Speculation ($q(\hat{y}_{i+t}) \le p(\hat{y}_{i+t})$)

Evaluation Model for Predicted Sequences