Elon Musk-led SpaceX AI has launched the Grok 4.5 AI model, calling it the deep tech company’s most intelligent offering to date designed for coding and agentic tasks.
While making the model public, SpaceXAI said Grok 4.5 was trained across tens of thousands of Nvidia GB300 graphics processing units (GPUs), with a focus on meticulous data filtering, deduplication, and quality scoring.
“We’ve partnered with SpaceX AI to train Grok 4.5,” said popular AI coding agent Cursor, the entity SpaceX recently acquired, post its historic Wall Street debut. Anysphere, the startup behind Cursor, was bought by the Musk-led company in an all-stock deal worth USD 60 billion to boost its presence in the lucrative enterprise AI tools market.
Grok 4.5 has been made available through SpaceXAI’s AI coding agent, “Grok Build,” in Cursor and through the SpaceXAI console, the company’s developer portal, using an API key. The product will likely be released in the European Union (EU) market in mid-July.
Grok 4.5 is priced at USD 2 per million input tokens and USD 6 per million output tokens.
“It is an Opus-class model but faster, more token-efficient, and lower cost,” SpaceX CEO Elon Musk said in a post on micro-blogging platform X (formerly Twitter).
Musk’s AI startup, xAI, was acquired by SpaceX in February. The maverick tech titan, in May, announced that xAI would cease to exist as a separate company and would instead become SpaceXAI.
Talking about SpaceXAI’s competition in the agentic AI market, rival Anthropic’s Claude Opus 4.8 is priced at USD 5 per million input tokens and USD 25 per million output tokens.
Comparatively, Sam Altman-headed OpenAI’s GPT-5.6 Luna is priced at USD 1 per million input tokens and USD 6 per million output tokens.
Input tokens are the text, code, or other data sent to an AI model, while output tokens are the text or code the model generates in response to the inputs.
Talking about OpenAI, the latter will publicly launch its most advanced AI model, GPT-5.6, on 9th July, following a delay due to the US government’s requests over national security concerns about the potential misuse of powerful AI technologies.