xAI: Grok 4.20

Grok 4.20 is a paid model from xAI that accepts text, images, and files as input. It supports tool use and reasoning, and its 2-million-token context window is one of the larger limits available, making it practical for tasks that require holding long documents or extended conversation history in view. Structured output support is not confirmed in available data. At $1.25 per million input tokens and $2.50 per million output tokens, Grok 4.20 sits in the budget-to-mid range of current pricing. Its blended benchmark score of 61.5 is drawn from only two benchmarks, so that figure should be treated as preliminary rather than a settled indicator of capability. Buyers who specifically need a wide context window at a moderate price may want to shortlist it, but those making capability comparisons should weight it against models with broader benchmark coverage before committing.