Testing on what? It produces answers, that's all it's meant to do. Not correct answers or factual answers; just answers.

Every AI company seems to push two points:

1. (Loudly) Our AI can accelerate human learning and understanding and push humanity into a new age of enlightenment.

2. (Fine print) Our AI cannot be relied on for any learning or understanding and it's entirely up to you to figure out if what our AI has confidently told you, and is vehemently arguing is factual, is even remotely correct in any sense whatsoever.