By Reuters | Updated: July 9, 2026
July 8 (Reuters) – SpaceXAI (SPCX.O) 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 (NVDA.O) 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.
Reporting by Jaspreet Singh in Bengaluru; Editing by Maju Samuel
© Thomson Reuters 2026
