Grok 4.20
xAI's mid-tier model. Long-context specialist with 2M window.
Scores by test
Methodology →What you need to know
Grok 4.20 is defined by its high reliability in structured tasks and long-context processing. With a 2M token context window and top-tier internal scores in tool calling, faithfulness, and structured output, it is engineered for precision-heavy workflows. Its ability to maintain persona consistency and execute strategic analysis makes it a strong candidate for complex agentic deployments.
The model's pricing is positioned in the mid-to-high range, with a blended cost of $2.19/MTok. While not a budget option, the cost is justified by its specialized performance in multilingual tasks and high faithfulness. However, there is a significant gap in safety calibration, where it scored 1/5, and a moderate weakness in handling tabular data.
Use this model if your project requires a massive context window, reliable tool integration, or strict adherence to structured output formats. Skip this model if your application requires rigorous safety guardrails or frequent processing of complex tabular datasets.
Strengths — Top 3
Relative weaknesses — Bottom 3
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