{"slug": "elon-musk-is-back-at-the-ai-frontier-with-grok-4-6", "title": "Elon Musk Is Back At The AI Frontier With Grok 4.6", "summary": "SpaceXAI, the AI division Elon Musk folded xAI into earlier this year, released Grok 4.6, which ties OpenAI's GPT-5.6 Sol Max on the Artificial Analysis Intelligence Index at a score of 61, just one point behind Anthropic's Fable 5 Max's 62, and tops both rivals on evals like GDPVal-AA v2 and AA-Briefcase. Priced at $2 per million input tokens and $6 per million output tokens, roughly half of comparable models, Grok 4.6 is live today in Grok Build, Cursor, and the API, with double the usual included usage for the first week. The release marks a comeback for Musk, who co-founded OpenAI in 2015 but left in 2018 and later founded xAI in July 2023.", "body_md": "Elon Musk is back with a bang in the AI race.\n\nSpaceXAI, the AI division Musk folded xAI into earlier this year, has released [Grok 4.6](https://officechai.com/ai/grok-4-6-benchmarks/), and the numbers suggest it’s no longer playing catch-up to the industry’s leaders. The model goes head-to-head with OpenAI’s GPT-5.6 Sol and Anthropic’s Fable 5 across a range of coding and agentic benchmarks, and largely holds its own — tying GPT-5.6 Sol Max on the Artificial Analysis Intelligence Index at a score of 61, just a point behind Fable 5 Max’s 62, and even topping both rivals on evals like GDPVal-AA v2 and [AA-Briefcase](https://officechai.com/ai/xai-and-google-will-compete-to-build-the-best-ai-and-will-then-have-to-compete-with-china-elon-musk/).\n\nxAI says the model was built with a particular focus on long-running agentic work — staying on task across many steps of coding, research, or building an app from scratch, with the model reportedly showing more self-verification behaviour on longer jobs than its predecessor, Grok 4.5. It’s also considerably cheaper than rival frontier models, priced at $2 per million input tokens and $6 per million output tokens, roughly half of what comparable models charge. The model is live today in Grok Build, Cursor, and the API, with xAI offering double the usual included usage in Grok Build and Cursor for the first week.\n\nIt’s a strong showing for a lab that, on paper, is barely three years old. But to really appreciate what Grok 4.6 represents, it helps to rewind to where Musk’s AI ambitions actually began — not with xAI, but with OpenAI.\n\n## From founding OpenAI to walking away\n\nMusk was one of OpenAI’s original backers and, as it turns out, even [named the company himself](https://officechai.com/ai/emails-from-2015-reveal-how-elon-musk-had-originally-come-up-with-the-name-openai/), pitching “OpenAI” to co-founder Greg Brockman over email in December 2015 after rejecting alternatives like “Cogito.” Musk co-chaired the organisation alongside Sam Altman and was its single largest financial backer, funding it as a non-profit research lab explicitly meant to keep AI development out of the hands of any one company — Google, at the time, being the one he was most worried about.\n\nThat arrangement didn’t last. By 2017 and 2018, internal tensions had surfaced over how OpenAI should be funded and structured, with Brockman and Ilya Sutskever privately weighing a shift toward a for-profit model even as they [reassured Musk](https://officechai.com/ai/new-evidence-shows-openai-leaders-weighed-for-profit-shift-while-reassuring-musk-of-nonprofit-commitment/) of their commitment to the non-profit structure. Musk left OpenAI’s board in early 2018, and the organisation went on to convert into a capped-profit entity the following year, take a multi-billion dollar investment from Microsoft, and eventually [ship ](https://officechai.com/ai/how-sam-altman-had-launched-chatgpt-on-x-in-2022/)ChatGPT in 2022 — without him. Musk has since –unsuccessfully — sued OpenAI and Microsoft over the shift, at one point [seeking damages as high as $134 billion](https://officechai.com/ai/elon-musk-seeking-damages-of-up-to-134-billion-in-openai-for-profit-case/), arguing he was misled about the non-profit’s future.\n\n## Building xAI, and losing people of his own\n\nWatching from the outside as OpenAI’s models shipped without him clearly didn’t sit well with Musk, and in July 2023 he announced xAI, framing it as an answer to what he saw as excessive left-leaning bias in ChatGPT and other rival chatbots. The company [raised $6 billion at a $24 billion valuation](https://officechai.com/startups/elon-musks-ai-company-xai-raises-6-billion-at-24-billion-valuation/) within a year of launching its first model, Grok, and Musk leaned on the company to build a “maximally truth-seeking” alternative — an ambition that later extended into products like Grokipedia, xAI’s answer to what Musk considers a biased Wikipedia.\n\nxAI’s path hasn’t been without its own turbulence, though — turbulence that, in some ways, mirrors what happened at OpenAI. Of the twelve researchers who founded xAI alongside Musk in 2023, over [half have now left](https://officechai.com/ai/xai-co-founder-jimmy-ba-quits-6-of-12-co-founders-have-now-left/), including chief engineer Igor Babuschkin, who departed to start his own venture fund, and others who moved on to OpenAI, Anthropic, and Thinking Machines. It’s a pattern that has played out across nearly every major AI lab except Anthropic, which remains the [only frontier lab with its entire founding team intact](https://officechai.com/ai/amid-rapid-co-founder-departures-anthropic-is-the-only-major-ai-lab-with-all-its-co-founders-intact/).\n\nDespite the churn, xAI kept shipping, and this year the company was folded into SpaceX as a new division under the SpaceXAI name, bringing Grok, Grokipedia, and X under Musk’s aerospace company.\n\n## Full circle\n\nThere’s something fitting about where this leaves Musk. He co-founded and personally bankrolled OpenAI in the hope of steering the future of AI, only to be pushed to the sidelines as the company he started became one of the two or three most valuable AI labs in the world without him. Grok 4.6 going toe-to-toe with OpenAI’s own frontier model — and with Anthropic’s Fable 5, a lab partly built by people who once worked alongside him at OpenAI — is Musk effectively arriving back at the table he first pulled up a decade ago, this time on his own terms and with his own company.\n\nWhether SpaceXAI can sustain that position given how quickly it’s already burned most of its founding team remains an open question. But for now, at least, Musk’s second attempt at building the future of AI has caught up with the first one he walked away from.", "url": "https://wpnews.pro/news/elon-musk-is-back-at-the-ai-frontier-with-grok-4-6", "canonical_source": "https://officechai.com/ai/elon-musk-is-back-at-the-ai-frontier-with-grok-4-6/", "published_at": "2026-08-12 16:12:45+00:00", "updated_at": "2026-08-12 16:22:11.555625+00:00", "lang": "en", "topics": ["artificial-intelligence", "large-language-models", "ai-products", "ai-startups"], "entities": ["SpaceXAI", "Elon Musk", "Grok 4.6", "OpenAI", "GPT-5.6 Sol", "Anthropic", "Fable 5", "xAI"], "alternates": {"html": "https://wpnews.pro/news/elon-musk-is-back-at-the-ai-frontier-with-grok-4-6", "markdown": "https://wpnews.pro/news/elon-musk-is-back-at-the-ai-frontier-with-grok-4-6.md", "text": "https://wpnews.pro/news/elon-musk-is-back-at-the-ai-frontier-with-grok-4-6.txt", "jsonld": "https://wpnews.pro/news/elon-musk-is-back-at-the-ai-frontier-with-grok-4-6.jsonld"}}