On this day: Dec 11

The point at which the federal government and the states shifted from a hierarchical relationship to an adversarial one

Showed that, right after the view that embeddings have limits spread, the commercial importance of the reranking layer actually grew

Company-reported for GPT-5.2 Thinking: GDPval wins or ties 70.9% (GPT-5: 38.8%), ARC-AGI-2 (Verified) 52.9% (GPT-5.1 Thinking: 17.6%), SWE-bench Verified 80.0%

Google claimed 2.0 Flash outperforms 1.5 Pro on key benchmarks at twice the speed, launched the Multimodal Live API and Deep Research, and presented agent prototypes such as Project Astra, Project Mariner and Jules

Made Sparse MoE a standard architecture of the open ecosystem and imprinted the concept of total versus active parameters

The launch of the organization that would become the starting point for the GPT series and the shift to commercialization