It's outstanding at bridging the gap between "I need to mash these two concepts/technologies together" and "the answer is spread across six different StackOverflow threads." Hunting that stuff down using Google has been a delicate operation even at the best of times in the last 25 years, but it always took a lot of time. With an LLM and each such query, I've saved hours, maybe even whole workdays. Fact-checking an AI takes far less effort.