Resolves according to mainstream opinion by independent sources.

The name doesn't have to be exactly "GPT-6", if it is sufficiently different from GPT-5 and strongly advertised as such, I'll count it as GPT-6.

I'll use Wikipedia's definition of AGI for this market:

Artificial general intelligence (AGI)—sometimes called human‑level intelligence AI—is a type of artificial intelligence that would match or surpass human capabilities across virtually all cognitive tasks.

Artificial general intelligence - Wikipedia https://share.google/skCpncfE1HhkzuEQC

If Open AI stops existing before releasing GPT-6, this market resolves NA.

If another model of open AI is already AGI, it won't affect the resolution of this market.

The AI comments below this line might be flawed or wrong, please don't take whatever they say for granted, they are not part of the resolution criteria.

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