Yes, but you have to know to improve the results, and the techniques don't alway work. I asked for a table of sports results from a specific date in the past that's easy to lookup, and it gave me wrong results. But they looked plausible. When I asked it about specific result, it gave me a completely misleading answer, but one that would be plausible to someone who doesn't know the sport very well. After informing it of the wrong answer, it corrected itself by giving a different wrong answer. I tried that a couple times with the same result.

This becomes a problem when people start to treat LLMs as authoritative on facts.