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1) I have the same idea with you.
2) I have the same idea as you.

Which one is better or correct?

Thank you so much as usual!
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Hans51Which one is better or correct?
Only #2 is possible.
Comments  
Students: We have free audio pronunciation exercises.

I have the same idea as you is more correct.

Because the full sentencse is I have the same idea as you (have).

the same idea as I.