xAI: grok-4-1-fast-non-reasoning API
A low-latency, high-throughput variant of Grok-4.1 designed for instant responses. It bypasses the thinking token phase to prioritize speed while excelling in creative writing, emotional intelligence (EQ), and agentic tool-calling across a massive 2M context.
- Context window: 2,097,152 tokens
- Max output: 32,768 tokens
- Input: text, image
- Output: text
- Tool calling: Supported
- File input: Supported
- Released: 2025-11-19
- Knowledge cutoff: 2024-10-31
Frequently Asked Questions
What is the context window of grok-4-1-fast-non-reasoning?
grok-4-1-fast-non-reasoning supports a context window of up to 2,097,152 tokens.
Does grok-4-1-fast-non-reasoning support function calling?
Yes. grok-4-1-fast-non-reasoning supports tool / function calling.
What is the knowledge cutoff of grok-4-1-fast-non-reasoning?
The knowledge cutoff of grok-4-1-fast-non-reasoning is 2024-10-31.