Grok 4 Fast
Overview
Overview
Grok 4 Fast is a high-speed variant of Grok-4, optimized for faster inference while maintaining strong reasoning capabilities. It offers improved throughput and lower latency compared to the standard Grok-4 model.
Grok 4 Fast was released on August 28, 2025. API access is available through xAI.
Performance
Timeline
ReleasedUnknown
Knowledge CutoffUnknown
Specifications
Parameters
Unknown
License
Proprietary
Training Data
Unknown
Benchmarks
Benchmarks
Grok 4 Fast Performance Across Datasets
Scores sourced from the model's scorecard, paper, or official blog posts
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Pricing
Pricing
Pricing, performance, and capabilities for Grok 4 Fast across different providers:
| Provider | Input ($/M) | Output ($/M) | Max Input | Max Output | Latency (s) | Throughput | Quantization | Input | Output |
|---|---|---|---|---|---|---|---|---|---|
xAI | $0.20 | $0.50 | 2.0M | 30.0K | — | 90 c/s | — | Text Image Audio Video | Text Image Audio Video |
API Access
API Access Coming Soon
API access for Grok 4 Fast will be available soon through our gateway.
Recent Posts
Recent Reviews
FAQ
Common questions about Grok 4 Fast
Grok 4 Fast was released on August 28, 2025 by xAI.
Grok 4 Fast was created by xAI.
Grok 4 Fast is released under the Proprietary license.
Yes, Grok 4 Fast is a multimodal model that can process both text and images as input.