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grok4-fast
openrouterFeatured
Grok 4 Fast is xAI's latest multimodal model with SOTA cost-efficiency and a 2M token context window. It comes in two flavors: non-reasoning and reasoning. Read more about the model on xAI's news post. Reasoning can be enabled/disabled using the reasoning enabled parameter in the API. Learn more in our docs
Model Type
chat
Cost
0 tokens / 1_megabitpixiels
Features
Stream
Model Settings
image size
portrait_16_9, square_hd, square, portrait_4_3, portrait_16_9, landscape_4_3, landscape_16_9
num images
4, 3, 2, 1
num inference steps
12, 1, 4, 8
enable safety checker
false, true
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