BrianOnAIxAI: Grok 4
byxAI
Grok 4 is xAI's latest reasoning model with a 256k context window. It supports parallel tool calling, structured outputs, and both image and text inputs. Note that reasoning is not exposed, reasoning cannot be disabled, and the reasoning effort cannot be specified. Pricing increases once the total tokens in a given request is greater than 128k tokens. See more details on the [xAI docs](https://docs.x.ai/docs/models/grok-4-0709)
Pricing
Input
$3.00 / 1M tokens
Output
$15.00 / 1M tokens
Specifications
Context Window256K tokens
Max Output— tokens
Modalitymultimodal
Input Typesimage, text
Output Typestext
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