xAI
Grok 4.1 Fast
xAI's high-performance variant of Grok 4.1 optimized for low-latency, tool-calling, and agentic workflows with extremely large context support and multimodal capabilities.
Best for: Fast chat, long-context document processing, agentic reasoning, tool execution (search, code, APIs), enterprise assistants.
Capabilities
- ✓reasoning
- ✓Temperature control
- ✓Web search
- ✓Adjustable reasoning effort
- ✓Image understanding
- ✓File/document understanding