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Grok 4 Fast
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Grok 4 Fast
Pushing the frontier of cost-efficient intelligence
# Large Language Model
Featured on : Sep 21. 2025
Featured on : Sep 21. 2025
What is Grok 4 Fast?
Grok 4 Fast is xAI's latest multimodal reasoning model, setting a new standard for cost-efficient intelligence. With a 2M token context window, it achieves a SOTA price-to-performance ratio. It's now available for free in the Grok app.
Problem
Users face high costs and limited context when using traditional AI models leading to inefficiency and higher expenses
Solution
AI model (multimodal reasoning tool) enabling users to process vast data efficiently with a 2M token context window and SOTA price-to-performance ratio. Example: analyze large datasets, generate complex outputs at lower costs
Customers
AI engineers, data scientists, and enterprises requiring scalable, cost-effective AI solutions for advanced tasks
Unique Features
Combines 2M token context window (largest known) with multimodal reasoning and cost-efficient pricing
User Comments
Exceptional performance for long-context tasks
Reduced operational costs significantly
Easy integration via Grok app
Multimodal capabilities enhance versatility
Free access in app accelerates adoption
Traction
Launched as xAI's flagship model (backed by Elon Musk)
Part of Grok app ecosystem with undisclosed users but major enterprise adoption
Revenue model includes API access (price details not public)
Market Size
Generative AI market projected to reach $1.3 trillion by 2032 (Bloomberg Intelligence 2023)