xAI: grok-4:free
grok-4:free
256K context131.1K outToolsStructuredWeb search
Released Jul 10, 2025Updated Jul 10, 2025
Grok 4 is xAI's latest reasoning model with a 256k context window. It supports parallel tool calling, structured outputs, and both image and text inputs. Note that reasoning is not exposed, reasoning cannot be disabled, and the reasoning effort cannot be specified. Pricing increases once the total tokens in a given request is greater than 128k tokens. See more details on the xAI docs
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Input price
$0.00/ 1M tokens
Output price
$0.00/ 1M tokens
Context window 256K tokensCompatible endpoints openaiVendor xAI
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