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xAI: Grok 4.1 Fast

x-ai

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...

Context window
2,000,000 tokens
Input cost
$0.20 / 1M
Output cost
$0.50 / 1M
Latency (p50)