I just asked GPT-4 a GSM8K problem and I agree with your point. I think what’s happening is that GPT-4 has been fine-tuned to respond with chain-of-thought reasoning by default so it’s no longer necessary to explicitly ask it to reason step-by-step. Though if you ask it to “respond with just a single number” to eliminate the chain-of-thought reasoning it’s problem-solving ability is much worse.
I just asked GPT-4 a GSM8K problem and I agree with your point. I think what’s happening is that GPT-4 has been fine-tuned to respond with chain-of-thought reasoning by default so it’s no longer necessary to explicitly ask it to reason step-by-step. Though if you ask it to “respond with just a single number” to eliminate the chain-of-thought reasoning it’s problem-solving ability is much worse.