Text Generation
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Grok 4 Fast

Provider: xAI Updated: 2026-09-18

Grok 4 Fast is an text generation model from Xai, designed for general AI application workflows.

Text Generation Multilingual

Pricing

Input 1.4 CNY / 1M tokens
Output 3.5 CNY / 1M tokens
Text to Image -
Image to Image -
Text to Video -
Image to Video -

Capabilities

Input Types Text / Image
Output Types Text
Function Calling -
Session Cache -
Fine-Tuning -
Prefix Cache -
Structured Output -
Image Understanding -
Text Generation Supported
Text to Image -
Image to Image -
Text to Video -
Image to Video -
Open Source Status Closed source

Parameters

Last Updated 2026-09-18
Context Length 2000K
Max Input Tokens 200K
Max Output Tokens 200K
Max Thought Tokens -
TPM -
RPM -
Parameter Count -
Modalities Multimodal
Language Support Multilingual
Best For General AI application workflows
Resolution -
Video Duration -
Frame Rate -

Benchmarks

These benchmark scores summarize how the model performs across different tasks and evaluation sets.

AIME

Measures performance on difficult competition-level mathematics problems.

92
GPQA

Evaluates graduate-level science knowledge and reasoning ability.

85.7
LiveCodeBench

Benchmarks code understanding and real-world coding task performance.

80