Elon Musk’s SpaceXAI has launched Grok 4.5, its latest flagship artificial intelligence model, as competition among leading AI companies continues to intensify.
The new model is immediately available through Grok Build, SpaceXAI’s AI coding assistant integrated with the popular coding platform Cursor, as well as through the company’s developer portal using an API key. European availability is expected in mid-July.
According to SpaceXAI, Grok 4.5 was trained using tens of thousands of Nvidia GB300 graphics processing units (GPUs), with engineers placing a strong emphasis on data quality through extensive filtering, deduplication and scoring techniques.
“We’ve partnered with SpaceXAI to train Grok 4.5,” AI coding platform Cursor said.
The launch comes shortly after SpaceX announced plans to acquire Anysphere, the company behind Cursor, in an all-stock deal valued at US$60 billion, strengthening its presence in the fast-growing enterprise AI software market.
Lower Pricing, Faster Performance
SpaceXAI has positioned Grok 4.5 as a premium model that delivers higher performance at a lower cost than some rivals.
The company has priced the model at US$2 per million input tokens and US$6 per million output tokens.
“It is an Opus-class model, but faster, more token-efficient and lower cost,” Elon Musk wrote on X.
For comparison, Anthropic’s Claude Opus 4.8 costs US$5 per million input tokens and US$25 per million output tokens, while OpenAI’s upcoming GPT-5.6 Luna is priced at US$1 and US$6 per million input and output tokens respectively.
Input tokens refer to the text, code or other information provided to an AI model, while output tokens represent the content generated in response.
AI Competition Intensifies
The launch comes just ahead of OpenAI’s planned public release of GPT-5.6, scheduled for Thursday after a government-requested delay linked to US national security concerns over advanced AI systems.
Meanwhile, Musk has continued consolidating his AI ambitions. Earlier this year, xAI was acquired by SpaceX, and in May Musk announced that the AI company would cease operating as a separate entity and instead become part of SpaceXAI.
With OpenAI, Anthropic and SpaceXAI all rolling out increasingly powerful frontier models, the race to dominate the next generation of artificial intelligence is accelerating rapidly.
(with inputs from Reuters )
