xAIDevelops the Grok language models focused on reasoning, learning, and advancing reliable, high-performance AI systems.
Models (8)
grok-4.6chat-completion
Input typetext, image
Output typetext
Context window200k
Token limits128k output
Preview
grok-4.3chat-completion
Input typetext, image
Output typetext
Context window200k
Token limits8.192k output
Preview
grok-4-20-reasoningchat-completion
Input typetext, image
Output typetext
Context window262k
Token limits8.192k output
Preview
grok-4-20-non-reasoningchat-completion
Input typetext, image
Output typetext
Context window262k
Token limits8.192k output
Preview
grok-4-1-fast-non-reasoningchat-completion
Input typetext, image
Output typetext
Context window128k
Token limits128k output
Generally available (GA)
grok-4-1-fast-reasoningchat-completion
Input typetext, image
Output typetext
Context window128k
Token limits128k output
Generally available (GA)
grok-4chat-completion
Input typetext
Output typetext
Context window128k
Token limits8.192k output
Generally available (GA)
grok-code-fast-1chat-completion
Input typetext
Output typetext
Context window256k
Token limits8.192k output
Generally available (GA)
