Grok 4.5 is a huge step up from their next best model and now around the same performance as GLM 5.2, but it's not exactly at the frontier of the cost efficiency curve in our coding evaluations. That curve is defined by the 2 lighter GPT 5.6 models.

However, the fact that they finally have a strong post-training and RL setup bodes well for future releases. They certainly are not compute-constrained anymore.

Data at https://gertlabs.com/rankings?mode=oneshot_coding