SpaceXAI launched its latest model, Grok 4.5, the first since the company went public several weeks ago. In a blog post published Wednesday, SpaceXAI characterized its new release as a workhorse that can tackle all the typical tasks the AI industry has tried to automate: coding and app creation, clerical and administrative work, research, writing,
SpaceXAI launched its latest model, Grok 4.5, the first since the company went public several weeks ago.
In a blog post published Wednesday, SpaceXAI characterized its new release as a workhorse that can tackle all the typical tasks the AI industry has tried to automate: coding and app creation, clerical and administrative work, research, writing, and other forms of routine knowledge work.
Grok can also supposedly do all of this for less expense, as SpaceXAI says its model has “twice the symbolic efficiency” of other leading models. If translated to real-world use cases, that efficiency would be a big plus for SpaceXAI, as the cost of tokens has been a growing concern for AI consumers.
The company on Wednesday released benchmark metrics that appeared to show the Grok’s competitiveness with other top models from SpaceXAI’s competitors, though just shy of the best in class:

In a post on his social media platform
“Based on strong positive customer feedback in our beta testing program, @SpaceXAI will make Grok 4.5 available to the public tomorrow. It’s an Opus-class model, but faster, more token-efficient, and lower cost,” Musk wrote in his X post.
Musk later added: “Our internal assessment is that Grok 4.5 is roughly comparable to Opus 4.7, but much faster. The combination of capacity, higher speed and lower cost is what makes it competitive.”
SpaceXAI says its new model costs $2 per million tokens in and $6 per million tokens out. That’s pretty competitive, if Grok’s capabilities match SpaceXAI’s rhetoric.
Opus 4.7, by comparison, costs $5 per million tokens in and $25 per million tokens out. OpenAI has tiered costs for different model versions: Sol, the most expensive, costs $5 for input tokens and $30 for output, while its least expensive, Luna, costs $1 for input and $6 for output.
It’s a big week for AI model releases. OpenAI plans to release GPT 5.6, its latest and most powerful model, on Thursday. The release of that model had previously been limited by the Trump administration, due to concerns about its security implications. OpenAI has called it its “strongest model yet.”
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