SpaceXAI Unveils Grok 4.5 as Elon Musk Calls It an 'Opus-Class' AI Model
SpaceXAI has officially launched Grok 4.5, its latest flagship artificial intelligence model, positioning it as a high-performance system built for coding, agentic workflows and general knowledge tasks. The release marks the company's first major AI launch since going public earlier this year.
The new model was introduced through SpaceXAI's official Grok 4.5 announcement, which describes it as the company's most capable model to date, designed to automate software engineering, research, office productivity and complex reasoning tasks while delivering significantly greater efficiency.
One of Grok 4.5's biggest selling points is its improved token efficiency. SpaceXAI says the model generates comparable results using roughly half the number of tokens required by leading competitors, allowing developers to reduce inference costs without sacrificing performance.
The company also released benchmark results showing Grok 4.5 competing with several frontier AI models across software engineering and reaso
ning evaluations, although it trails the highest-performing models on some industry benchmarks.
Elon Musk praised the release on X, describing Grok 4.5 as an "Opus-class" model comparable to Anthropic's Opus series but offering faster performance and lower operating costs. He said early customer feedback from the beta programme encouraged the company to accelerate the public rollout.
Pricing is another area where SpaceXAI is seeking a competitive advantage. According to the official Grok 4.5 documentation, the model costs $2 per million input tokens and $6 per million output tokens, substantially undercutting several premium frontier models while targeting enterprise developers and businesses.
Grok 4.5 is available through the SpaceXAI API, Grok Build and Cursor, where the company says it has been trained on large-scale datasets spanning science, engineering, mathematics and software development.
Enterprise AI adoption remains a central focus for the release as SpaceXAI intensifies competition with OpenAI, Anthropic and Google.
The launch comes during an exceptionally active week for the AI industry, with OpenAI preparing to release its next-generation GPT-5.6 family while several other major labs continue rolling out new frontier models.
Analysts say the latest wave of releases reflects the rapidly escalating race for enterprise AI leadership, where performance, speed and operating costs are becoming as important as raw model capability.