It's almost nearly always wrong in my experience. Like if I ask it a basic technical question, it gets stuff mostly correct but if you look too much at the details, then errors start popping up. If you ask it something relatively complicated, it's nearly always wrong.
Like as an easy example of the latter, I asked chatGPT "What is the S4 model in NLP?" and it gave back
> The S4 model (Simple Synchronous Syntactic-Semantic Sentence Simplification Model) is a model in natural language processing (NLP) that aims to simplify complex sentences while preserving their original meaning. The model was introduced in the paper "A Simple Synchronous Syntactic-Semantic Sentence Simplification Model" by Siddharthan et al. (2014).
> The S4 model consists of two main components: a synchronous grammar and a semantic model. The synchronous grammar is used to identify the syntactic structure of the input sentence and generate a simplified version of it. The semantic model is then used to ensure that the simplified sentence retains the original meaning.
> The S4 model is designed to address the problem of text simplification, which is the process of transforming complex text into simpler text that is easier to read and understand. Text simplification is important for making information more accessible to people with cognitive disabilities or limited literacy skills, as well as for improving readability for non-native speakers of a language.
> Overall, the S4 model represents an important contribution to the field of NLP, as it provides a simple yet effective approach to sentence simplification that can be used in a wide range of applications.
However, all of the above statements are like complete nonsense. The citation doesn't exist and the S4 model that the thing is saying exists doesn't.
I have found search engines to be significantly more reliable (with the ability to actually check sources) than chatGPT. Usually, when I get decent answers from chatGPT, I would also get the same from Wikipedia which is usually a top result on most search engines. Do you have an example of an entire class of technical queries where chatGPT might perform better?