xAI: Grok 4.1 Fast
Provided by OpenRouter
Grok 4.1 Fast is xAI's best agentic tool calling model that shines in real-world use cases like customer support and deep research. 2M context window. Reasoning can be enabled/disabled using the `reasoning` `enabled` parameter in the API. [Learn more in our docs](https://openrouter.ai/docs/use-cases/reasoning-tokens#controlling-reasoning-tokens)
Specifications
2,000,000 tokens$0.200/M$0.500/MAbout xAI: Grok 4.1 Fast
Grok 4.1 Fast is xAI's best agentic tool calling model that shines in real-world use cases like customer support and deep research. 2M context window. Reasoning can be enabled/disabled using the `reasoning` `enabled` parameter in the API. [Learn more in our docs](https://openrouter.ai/docs/use-cases/reasoning-tokens#controlling-reasoning-tokens)
Strengths
- •Multimodal understanding - can process text and images
- •Large context window (2000k tokens) for long conversations
- •Fast response times for real-time interactions
Use Cases
- •Image and document understanding
- •Content creation and writing assistance
- •General conversations and Q&A
Limitations
Performance may vary based on query complexity, context length, and task type. Consider using higher-tier models for production-critical applications.
Sample Prompts
Try these prompts to explore xAI: Grok 4.1 Fast's capabilities:
Analyze this image and describe what you see in detail
Extract the key information from this screenshot
Compare the two images and explain the differences
Tip: Customize these prompts to fit your specific needs and use cases.
Premium Model
This model requires credits to use. xAI: Grok 4.1 Fast offers advanced capabilities and high-performance features for production-grade applications.
Credits required for premium models. Free models are available without credits.
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