By definition, a task-specific artificial intelligence, like GPT-3, is not an artificial general intelligence, because its intelligence is not "general".
The definition of general intelligence is thus:
>[Intelligence is] “a very general mental capability that, among other things, involves the ability to reason, plan, solve problems, think abstractly, comprehend complex ideas, learn quickly and learn from experience … It is not merely book learning, a narrow academic skill, or test-taking smarts. Rather it reflects a broader and deeper capability for comprehending our surroundings – ‘catching on’, ‘making sense’ of things, or ‘figuring out’ what to do” (Gottfredson, 1997a).
Note the requirement of a "general ability" in tasks, general in the sense of:
>Something (such as a concept, principle, or statement) that involves or is applicable to the whole.[1]

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