xAI: Grok 4.1 Fast
xAIproenterprise
x-ai/grok-4.1-fastDescription
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...
Specifications
Context Window
2,000,000
tokens
Max Completion Tokens
30,000
tokens
Input Modalities
textimagefile
Output Modalities
text
Supported Parameters
include_reasoninglogprobsmax_tokensreasoningresponse_formatseedstructured_outputstemperaturetool_choicetoolstop_logprobstop_p
Pricing
| Price Type | Rate | Unit |
|---|---|---|
| Input (Prompt) | $0.000000 | per 1M tokens |
| Output (Completion) | $0.000000 | per 1M tokens |
| Web Search | $0.005000 | per query |
| Cache Read | $0.000000 | per 1M tokens |
Tier Availability
Free
Not Available
Pro
✓ Available
Enterprise
✓ Available