Input Price$0.20/1M tokens
Output Price$0.50/1M tokens
Intelligence35.1
Coding27.4
Specifications
Technical details and pricing.
ProviderxAI
Context WindowN/A
Release DateSep 19, 2025
ModalitiesText
Benchmarks
10 benchmark scores from Artificial Analysis.
GPQA84.7%
MMLU Pro85.0%
HLE17.0%
LiveCodeBench83.2%
AIME 202589.7%
SciCode44.2%
LCR64.7%
IFBench50.5%
Tau265.8%
TerminalBench Hard18.9%
Composite Indices
Higher is better; speed and price are normalized
Standard Benchmarks
Only benchmarks with data are shown
Frequently Asked Questions
What is Grok 4 Fast (Reasoning) good for?
Grok 4 Fast (Reasoning) currently has benchmark and pricing data on this page. Runtime metadata will appear later when the model catalog entry becomes available.
How much does Grok 4 Fast (Reasoning) cost?
Pricing is based on usage. Current rates are $0.20/1M tokens for input and $0.50/1M tokens for output.
Is Grok 4 Fast (Reasoning) available in LLMBase Chat yet?
Not yet on this page. We will add chat and inference actions automatically once an exact catalog entry exists for Grok 4 Fast (Reasoning).
Does Grok 4 Fast (Reasoning) support images or audio?
Grok 4 Fast (Reasoning) focuses on text-based tasks.
Benchmarks and pricing use Artificial Analysis where available. Catalog specs are used as a fallback.