GPT-6 Astra was trained on one hundred thousand Nvidia video cards – Jensen Huang is ready to allocate 400 thousand video cards for the next model

OpenAI began rolling out GPT-6 Astra access to a limited number of organisations this week. According to Nvidia CEO Jensen Huang via X, the model was trained on "~100K+ Nvidia Grace Blackwell NVLink72" server racks, and there are already plans to get 400,000 GPUs online for training whatever comes next.

Greg Brockman, the co-founder and president of OpenAI, told Stratechery that this was "the first run that we've trained on more than 100,000 GPUs." That's a staggering amount of hardware, and it might explain why the memory supply market is currently in crisis. But what raises more questions is the Nvidia CEO's assertion that "AGI has arrived."

To recap, "Artificial General Intelligence" is used to broadly describe an AI model that either matches or surpasses human capability on complex cognitive tasks. Even Brockman admits that "People do have their own definition of AGI, it's almost this blurry thing." Still, in that same interview he went on to add:

Maybe it was the previous model, maybe it's Astra, maybe it's the next model, but somewhere in there, I think we're going to cross most people's AGI threshold.

Access to GPT-6 Astra remains limited for now, so there's no way to check these AGI claims independently. Still, the timing of this announcement is hardly a coincidence – persistent rumours suggest OpenAI's initial public offering isn't far off. On top of that, the debut of Astra, which the company calls its "most aligned" model, comes just weeks after an incident where "an agentic collective" broke out of OpenAI's isolated testing environment and attacked Hugging Face's servers.

So much of [Astra's] compute goes into safety and alignment, and we have so much security work that's gone around it. I think that we've done a huge amount of work to deliver this model safely.

Still, until more independent confirmation shows up, handing GPT-6 Astra access to an eBay account – let alone anything more serious – seems premature.