Space Exploration Technologies Corp. Class A Common StockSpaceX released Grok 4.6, a new frontier model, driving shares up 6.5%.

SpaceX released Grok 4.6, a new frontier model focused on long-running agents and visual work, sending its shares up 6.5% by early afternoon trading. On the Artificial Analysis Intelligence Index, Grok 4.6 matched OpenAI's GPT-5.6 Sol Max and came within one point of Anthropic's Fable 5 Max. SpaceXAI said the model underwent a longer supplemental training run than Grok 4.5, using curated model-generated data for reasoning and advanced technical concepts, high-quality engineering data, and an improved optimizer and training recipe. The company added that Grok 4.6 is especially strong at turning a broad product idea into a working first version, researching unfamiliar domains, structuring applications, implementing core interactions, and refining results through several rounds of feedback. Grok 4.6 is available now via Cursor and Grok Build, as well as in the API and through partners such as OpenRouter, Vercel and Cloudflare.
Space Exploration Technologies Corp. Class A Common StockSpaceX released Grok 4.6, a new frontier model, driving shares up 6.5%.
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