It was my understanding that there is also no legal liability for a lawyer for giving the wrong answer. In extreme cases there might be ethical issues that result in sanctions by the bar, but in most cases the only consequences would be reputational.
Are there cricumstances where you can hold an attorney legally liable for a badly written contract?
Nit: Malpractice insurance is (a species of) E&O insurance.
There is plenty of legal, ethical and professional liability for a lawyer giving the wrong answer, we don't often see the outcome of these things because like everything in the courts they take a long time to get resolved and also some answers are not wrong just "less right" or "not really that wrong."
Look at your most recent engagement letter with an attorney. I’d bet that you agreed to arbitrate all fee disputes, and depending on your state you might have also agreed to arbitrate malpractice claims.
Wrong Word in Contract Leads to $2M Malpractice Suit[1].
[1]https://lawyersinsurer.com/legal-malpractice/legal-malpracti...
About the only case where this works in practice is someone going pro se and using their own toolset to gin up a legal AI model. There's arguably a case for acting as an accelerator for attorneys, but the problem is that if you've got an AI doing, say, doc review, you still need lawyers to review not just the output for correctness, but also go through the source docs to make sure nothing was missed, so you're not saving much in the way of bodies or time.