grok

Grok 4.6, Gemini 3.7 Flash, DeepSeek V4-Pro-0813, and GLM-5.3 shipped within three days of each other — and not one of them is a new base model. The frontier is advancing by post-training, harness, and serving efficiency while every next-generation base stays in the oven.

On May 15, X pushed 18,263 lines of Rust and Python to the public algorithm repo — a complete architectural rewrite away from the 2023 Scala stack, built around a Grok-based transformer. The code does not build, the engagement weights are still missing, and the most interesting thing in it is the model nobody is reading.