Lexa AI keeps calling nominative plurals “genitive” – example inside

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Title: Lexa AI keeps calling nominative plurals “genitive” – example inside

Hey LR team & fellow Russian nerds,

Just ran into a pretty big grammar slip in Lexa AI and I don’t think it’s a one-off.

Sentence:

И, во-первых, здесь берёзки… Смотрите, берёзы!

What Lexa says:

  • берёзки = genitive plural of берёзка
  • берёзы = genitive plural of берёза
  • “used as subject of implied verb” (???)

Reality check:
Both are nominative plural, full stop.

Word Actual case Actual base Ending
берёзки nom pl берёзка -и
берёзы nom pl берёза -ы

Real genitive plurals for reference:

  • берёза → берёз
  • берёзка → берёзок

Russian doesn’t put genitive in subject position, ever. The first one is just здесь [есть] берёзки – classic existential construction.

I’ve seen Lexa do this a lot with -и/-ы endings. It’s confusing beginners who are trying to learn cases properly.

Quick fix idea:
Flag anything ending in -и/-ы as nominative plural unless it’s clearly after a quantifier or preposition that forces genitive.

Would love to see this patched – happy to provide more examples if needed!

Cheers,
MMJ