xAI, the company founded by Elon Musk, has announced the availability of its flagship Grok 3 model via API. Grok 3, introduced a few months ago, is xAI’s answer to models from OpenAI and Google. It can analyze images and answer questions, and also supports a range of features in the social network X, which xAI acquired in March.
Users have access to two versions of the model via API: Grok 3 and Grok 3 Mini, both with “reasoning” capabilities. The cost of using Grok 3 is three dollars per million input tokens and fifteen dollars per million tokens generated by the model. Grok 3 Mini costs thirty cents and fifty cents per million tokens, respectively. There are also faster versions of these models available at a higher price.
The price of Grok 3 is higher than some competing models, such as Google’s Gemini 2.5 Pro. It is also noted that the Grok 3 API has a smaller context window than previously stated — a maximum of 131,072 tokens. This is less than the one million tokens xAI promised to support earlier this year.
Elon Musk described Grok as a model capable of answering controversial questions, unlike other AI systems. However, previous versions of the model avoided discussing political topics. Musk explained this by the specifics of the training data and promised to make Grok more politically neutral. Whether this has been achieved at the model level is still unclear.
