xAI's next flagship AI model is nearly ready. Elon Musk confirmed on Sunday that Grok foundation model V9-Medium — a 1.5 trillion parameter model — has completed its training phase with evaluations described as positive. A public release is now approximately two to three weeks away.
One notable detail in Musk's announcement: a significant volume of Cursor data was incorporated during supplementary training, with more still to come. Cursor — the AI-powered coding assistant — suggests xAI is doubling down on developer and coding use cases for this generation of Grok. Supervised fine-tuning is already underway, with reinforcement learning set to begin within days.
According to background research, V9-Medium represents a substantial jump from the previous V8 model, which ran on roughly 0.5 trillion parameters. At 1.5T, V9-Medium is three times the scale of its predecessor — a meaningful leap that typically translates to stronger reasoning, better instruction-following, and improved performance on complex tasks. The public release timeline of two to three weeks aligns with the fine-tuning and RL pipeline wrapping up before a broader rollout.
For Tesla and xAI watchers, the Cursor data angle is worth tracking. If Grok V9-Medium ships with materially stronger coding capabilities, it could accelerate xAI's positioning as a developer-first AI platform — and raise the bar for what's expected from the Grok integration inside Tesla vehicles and the X platform going forward.
Sarah focuses on Tesla Energy, SpaceX missions, and the broader Musk AI portfolio. Former data analyst in clean energy. Based in San Francisco.
Sources verified at publish time. Spotted an inaccuracy? Email editorial@basenor.com.
