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Grok 4.20

Grok 4.20

xAIx-ai/grok-4.20
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Grok 4.20 is an xAI flagship model built for long-running agentic work and ambitious interactive and visual tasks, with a 500,000-token context window and text/image input. It targets high-intelligence coding, reasoning, and multi-step agent use cases.

Cost rate
0.6x
Context
2M
Released
Mar 31, 2026
Input
TextImageFile
Output
Text
Support
ReasoningTool callingStructured outputs

Best at

The categories where this model ranks highest.

No top-ranked categories found.

Performance

Median latency and throughput measured across recent requests.

Throughput85 tok/s
Latency0.59s