Earlier quoted context omitted.
They are calling for a pause, not a stop. It’s quite clear that OpenAI has a significant lead over everyone else. The only other country outside the west that even has a chance at developing something better than GPT-4 soon is China. China has a pretty cautious culture as well so it’s quite possible that a bilateral moratorium can be negotiated with them. ADDED: Even without considering X-risks, China’s rulers cannot…
If you counted research, open ai didn't have a lead until gpt-4 nevermind a significant one. most of this is scale. their lead is a few months tops.
Another example is Meta only finishing OPT-175B, a near equivalent of GPT-3, two years after it.
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Added to reply:
GPT-4 got much better results on many benchmarks than PaLM, Google's largest published model [1]. PaLM itself is probably quite a bit better than LamDa in several tasks, according to a chart and a couple of tables here: https://arxiv.org/abs/2204.02311
It's unclear that Google currently has an internal LLM as good as GPT-4. If they do, they are keeping quiet about it, which seems quite unlikely given the repercussions.
[1] GPT-4's benchmark results vs PaLM: https://openai.com/research/gpt-4