GPT-6 Astra appears to be a massive jump in opaque reasoning ability: it looks like it can solve hard competition math problems entirely in its head (as in, without verbalized reasoning) while prior AIs could solve basic word problems. This seems extremely concerning! That is, if these benchmark results are representative (see the highlighted caveats in the image, I'm particularly worried about contamination). Related to this, UK AISI found Astra has much worse monitorability. I'd guess…