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Grok 4.20API
Grok 4.20 (xAI): live API pricing, context window and the best open-source alternatives, tracked daily by olud.ai.
Prices update automatically — checked hourly against provider list prices.
Benchmarks & performance
Independent benchmark scores for Grok 4.20, measured by Artificial Analysis. Higher is better. Measurement mode: Reasoning.
About this model
Grok 4.20 is a commercial AI model by xAI. The specifications below are tracked automatically: pricing is refreshed hourly from public list prices, so the numbers on this page reflect the current cost of using the model through its API.
Frequently asked questions
What is Grok 4.20?
Grok 4.20 is an AI language model from xAI. It is a proprietary model, available through an API. It scores 37 on the Artificial Analysis intelligence index.
Is Grok 4.20 free?
Grok 4.20 is not free: it costs $1.25 per million input tokens and $2.5 per million output tokens. Open-weight alternatives can be self-hosted at no per-token cost.
What is Grok 4.20 good at?
Independent benchmarks from Artificial Analysis give it GPQA 91.1%, Humanity's Last Exam 32.2%, Long Context Reasoning 58%, SciCode 45.6%, IFBench 81.2%, τ²-Bench 93%, Terminal-Bench Hard 37.9%.