xAI: Grok 4 vs xAI: Grok 4.20 Beta

Side-by-side model comparison based on OpenRouter API data.

SpecxAI: Grok 4xAI: Grok 4.20 Beta
ProviderxAIxAI
Context Length256K2M
Max OutputN/AN/A
Input Price/1M$3.00$2.00
Output Price/1M$15$6.00
Cache Read/1M$0.75$0.20
Cache Write/1MFreeFree
Input ModalitiesImage + TextText + Image
Output ModalitiesTextText
TokenizerGrokGrok
ModeratedNoNo