The community members discuss the experimental nature of the FLAREInstructQueryEngine. One member confirms that it is "100% experimental", and others note issues with the outputs, such as "cannot be found in context" errors and the inability to get good responses. There is speculation that the engine may require GPT-4 to work well, and one member confirms they used GPT-4 with it. However, there is no explicitly marked answer in the comments.
