Elon Musk’s AI firm, xAI, has launched a brand new agentic coding mannequin named grok-code-fast-1, because it ventures into a brand new phase of the AI trade.
The mannequin is designed to autonomously deal with coding-related duties, a key focus for a lot of AI corporations.
In a weblog put up, xAI described grok-code-fast-1 as a ‘speedy and economical reasoning mannequin’ tailor-made for normal programming duties.
“We constructed grok-code-fast-1 from scratch, beginning with a brand-new mannequin structure. To put a strong basis, we fastidiously assembled a pre-training corpus wealthy with programming-related content material,” the put up mentioned. “For post-training, we curated high-quality datasets that replicate real-world pull requests and coding duties.”
xAI mentioned that grok-code-fast-1 is adaptable throughout the software program growth stack, with specific proficiency in languages similar to TypeScript, Python, Java, Rust, C++, and Go.
The mannequin is able to managing varied programming duties with restricted supervision, together with constructing initiatives from the bottom up, responding to codebase inquiries, and conducting detailed bug fixes.
The mannequin is being provided totally free for a restricted interval with choose launch companions, together with Cline, Copilot, Cursor, GitHub, Kilo Code, opencode, Roo Code, and Windsurf.
Will probably be usually accessible by way of the xAI API, with pricing set at $0.20 per million enter tokens, $1.50 per million output tokens, and $0.02 per million cached enter tokens.
The mannequin was initially launched quietly in late August 2025, below the codename sonic, throughout which xAI monitored group suggestions and made a number of updates.
xAI is engaged on updates for grok-code-fast-1, with a variant supporting multimodal inputs and prolonged context size already in coaching.
Within the wider AI panorama, corporations similar to OpenAI and Microsoft are additionally specializing in AI coding assistants. Microsoft launched GitHub Copilot, a coding agent, at its Construct convention in Might. OpenAI’s Codex was made accessible to ChatGPT Plus customers in June 2025.
Not too long ago, xAI filed a lawsuit towards Apple and OpenAI in a US federal courtroom in Texas accusing them of conspiring to hinder competitors within the AI market. The lawsuit claimed that Apple’s integration of OpenAI’s ChatGPT has led to the neglect of competing functions, together with xAI’s Grok chatbot, within the App Retailer rankings.
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