A post from @mattshumer_ is circulating with the claim that GPT-5.6-Sol "one-shotted" a voxel-based Manhattan build and ran for almost a week autonomously. So far, the public evidence is narrow, so the safest read is what the post claims and what remains unverified. The useful read for readers is therefore limited but clear: what was shown or claimed, who put it in front of the conversation, and what would need more confirmation before anyone treats it as settled.