What is the acceptance criteria for anthologies?

The general acceptance criteria applies.

In addition, the manuscripts readers receive should be consistent with what they're being asked to review.

If your aim is to ask readers to review an anthology, then you need to provide readers with the full anthology, not just a single story in the anthology.

Likewise, if you only share a single story within the anthology, then the platforms where you ask readers to post a review should also only be for that story, not the full anthology.

What we will NOT accept is the case where you share a single story in the anthology but then ask readers to post a review for the full anthology on Amazon, Goodreads, etc...