Models / LLM and chat
xAI · xai/grok-4-5
Grok 4.5
Long-context reasoning with tool use
xAI's flagship reasoning model for coding, long-context analysis, tool calling, and image understanding.
Flagship
model tier
Vision
input
Tools
supported
xAI
provider
Live playground
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Run the model, inspect its schema, then move the same request into production with one imageat API key.
imageat playground — Grok 4.5
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Output
Your response will appear here
Reason with context
Use the model for analysis, planning, and multi-step knowledge work.
Build and code
Apply it to software development, structured output, and agent workflows.
Generate text
Create clear answers, summaries, drafts, and conversational experiences.
Model overview
What Grok 4.5 is built for
xAI's flagship reasoning model for coding, long-context analysis, tool calling, and image understanding.
- Coding and technical reasoning
- Long-context analysis
- Tool-calling workflows
- Image understanding