SpaceXAI launches Grok 4.5 model for coding, agentic tasks

SpaceXAI on Wednesday launched the Grok 4.5 AI model, calling it the company's most intelligent offering to date designed for coding and agentic tasks.

Here ​are some details:

SpaceXAI said Grok 4.5 was trained across tens of thousands of Nvidia GB300 graphics processing units, with a focus on meticulous data filtering, deduplication ‌and quality scoring.


"We've ⁠partnered ⁠with SpaceXAI to train Grok 4.5," popular AI coding agent Cursor said.

SpaceX said last month it would buy Anysphere, the startup behind Cursor, in an all-stock deal worth $60 billion to boost its presence in the lucrative enterprise AI tools market.

Grok 4.5 is immediately 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.

SpaceXAI ​said the EU ​availability is expected in mid-July.

Grok 4.5 is ⁠priced at $2 per million input tokens and $6 per million ​output tokens, the company said.

"It is an Opus-class model, but faster, more token-efficient and lower cost," SpaceX CEO Elon Musk said in a post on X.

Musk's AI startup xAI was acquired by SpaceX in February. He said in May that xAI would cease to exist as a separate company and would instead become SpaceXAI.

‌Rival Anthropic's Claude Opus 4.8 is priced at $5 per million input tokens and $25 per million output tokens.

Comparatively, OpenAI's ​GPT-5.6 Luna ​is priced at $1 per ⁠million input tokens and $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.

OpenAI will publicly launch its most advanced AI model GPT-5.6 on Thursday, following a delay last month prompted by U.S. government requests over national security concerns about the potential misuse of powerful AI technologies.