I would be very careful doing this
That is for certain types of therapy/clinical care. It is not always - and often isn’t - the case. Plenty of diagnoses and care protocols are not a matter of opinion or based on “you feeling there’s an issue” or deciding on your own there is no longer an issue.
Can anyone describe how to determine how a (professional, human) therapist is "a reliable agent" to make such a determination?
Meaning neither the LLM or the licensed therapist will voluntarily say, you are healed, you don't need me anymore.
Where are you often asking this question/getting these weak responses?
Using LLMs for therapy is so deeply dystopian and disgusting, people need human empathy for therapy. LLMs do not emit empathy.
Complete disaster waiting to happen for that individual.
An LLM generates non-deterministic information using sources you can’t even know, let alone evaluate, and is more primed to agree with you than give critical and objective evaluation. It is, at best, like asking your closest parent to help you through difficult interpersonal situations: The interaction is probably, subconsciously, going to be skewed enough towards soothing you that you just can’t consider it objective. The difference is that with an LLM, that’s deliberate. It’s designed in.
But it's better than talking to yourself or an abuser!
Sometimes people indeed just need validation and it helps them a lot, in that case LLMs can work. Alternatively, I assume some people just put the whole situation into words and that alone helps.
But if someone needs something else, they can be straight up dangerous.
They have world knowledge and are capable of explaining things and doing web searches. That's enough to help. I mean, sometimes people just need answers to questions.
In one way it's potentially worse than talking to yourself. Some part of you might recognize that you need to talk to someone other than yourself; an LLM might make you feel like you've done that, while reinforcing whatever you think rather than breaking you out of patterns.
Also, LLMs can have more resources and do some "creative" enabling of a person stuck in a loop, so if you are thinking dangerous things but lack the wherewithal to put them into action, an LLM could make you more dangerous (to yourself or to others).
It is a first principle though so it helps to “stir the context windows pot” by having it pull in research and other shit on the web that will help ground it and not just tell you exactly what you prompt it to say.
One of the great myths of models in countless fields/industries. LLM’s are absolutely in no way objective.
Now if you want to say it’s an “outside opinion“ that’s valid. But do not kid yourself into thinking it is somehow empirical or objective