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Grok 4.5

Grok 4.5 is a xAI reasoning model built for coding, agentic tasks, and knowledge work, accepting text and image input with selectable low, medium, and high reasoning levels. Your use is subject to xAI's Terms & Privacy Policies.

ReasoningTool UseImplicit CachingFile InputVision (Image)Web Search
Use with AI GatewayView docs
import { streamText } from 'ai'


const result = streamText({
  model: 'xai/grok-4.5',
  prompt: 'Why is the sky blue?'
})
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Latency

P50 time to first token (TTFT) on live AI Gateway traffic, in milliseconds. View the docs for more info.