Haider.(@haider1):elon just confirmed Grok 4.5 is in private beta more importantly, he's claiming SpaceX/xAI will release new scratch-trained models every month this year, which shows how much recent progress is coming from post-training with serious compute and cursor data in the mix, xAI will inevitably keep closing the gap.

2026.06.28 14:10

elon just confirmed Grok 4.5 is in private beta more importantly, he's claiming SpaceX/xAI will release new scratch-trained models every month this year, which shows how much recent progress is coming from post-training with serious compute and cursor data in the mix, xAI will inevitably keep closing the gap.

Elon Musk@elonmusk

2026.06.28 10:50

Grok 4.5, based on our 1.5T V9 foundation model, with Cursor data added in supplemental training, is now in private beta at SpaceX & Tesla. Early evals show performance close to, perhaps exceeding Opus. RL is continuing to significantly improve the model, and the Grok Build harness gets better every day. Nice work by all those involved! Completely trained from scratch new models will be released by @SpaceX every month this year.