GPT-4 didn’t give me an existential crisis. But it exacerbated the dizzy and vertiginous feeling I’ve been getting whenever I think about A.I. lately. And it has made me wonder whether that feeling will ever fade, or whether we’re going to be experiencing “future shock” — the term coined by the writer Alvin Toffler  for the feeling that too much is changing, too quickly — for the rest of our lives.

For a few hours on Tuesday, I prodded GPT-4 — which is included with ChatGPT Plus, the $20-a-month version of OpenAI’s chatbot, ChatGPT — with different types of questions, hoping to uncover some of its strengths and weaknesses.

I asked GPT-4 to help me with a complicated tax problem. (It did, impressively.) I asked it if it had a crush on me. (It didn’t, thank God.) It helped me plan a birthday party for my kid, and it taught me about an esoteric artificial intelligence concept known as an “attention head.” I even asked it to come up with a new word that had never before been uttered by humans. (After making the disclaimer that it couldn’t verify every word ever spoken, GPT-4 chose “flembostriquat.”)

Some of these things were possible to do with earlier A.I. models. But OpenAI has broken new ground, too. According to the company, GPT-4 is more capable and accurate than the original ChatGPT, and it performs astonishingly well on a variety of tests, including the Uniform Bar Exam (on which GPT-4 scores higher than 90 percent of human test-takers) and the Biology Olympiad (on which it beats 99 percent of humans). GPT-4 also aces a number of Advanced Placement exams, including A.P. Art History and A.P. Biology, and it gets a 1410 on the SAT — not a perfect score, but one that many human high schoolers would covet.

You can sense the added intelligence in GPT-4, which responds more fluidly than the previous version, and seems more comfortable with a wider range of tasks. GPT-4 also seems to have slightly more guardrails in place than ChatGPT. It also appears to be significantly less unhinged than the original Bing, which we now know was running a version of GPT-4 under the hood, but which appears to have been far less carefully fine-tuned.