SpaceXAI launches Grok 4.5, a low-cost AI model

SpaceXAI released its latest large language model, Grok 4.5, on Wednesday, July 8, 2026, positioning it as a lower-cost, efficiency-focused competitor to leading models from Anthropic and OpenAI. The release marks the company's first major product launch since its recent public listing and its merger with SpaceX earlier this year.

The model is priced at $2 per million input tokens and $6 per million output tokens, significantly undercutting rivals. Anthropic's flagship Claude Opus 4.8 model costs $5 and $25, respectively, while OpenAI's top-tier GPT-5.6 Sol is priced at $5 and $30. Company founder Elon Musk stated on the social media platform X that Grok 4.5 is roughly comparable in capability to Anthropic's previous flagship, Opus 4.7, but is faster and more token-efficient.

Grok 4.5 is the first model developed jointly with the AI coding startup Cursor, which SpaceX is in the process of acquiring in a deal valued at approximately $60 billion. Unlike earlier general-purpose chatbot versions, this model is specifically engineered for professional tasks, including software engineering, legal document review, financial analysis, and autonomous AI agents. It is being integrated...