Grok 4.20 Reasoning
xAI / Grok
🧠 Language Model
Reasoning-mode variant of Grok 4.20. Slower but stronger on multi-step problems.
Specifications
Input modalitiestext, image
Output modalitiestext
Capabilitieschat, reasoning, tools
Relative speed●●○○○ Relaxed
Context window1,000,000 tokens
Max output8,192 tokens
Vision inputYes
Tool callingYes
Input price$2.19 / 1M
Output price$4.38 / 1M
Pricing
$2.19 / 1M input tokens · $4.38 / 1M output tokens
Platform credit pricing — live rates on the Models page.