grok-4
completions
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.
Input:$3 / 1M tokens
Output:$15 / 1M tokens
Context:256K tokens
tools
text
image
text
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Code Example
Configuration
Base URL
API Keys
Headers
Project ID in header
X-Run-Id
X-Thread-Id
Model Parameters
11 availableinclude_reasoning
logprobs
max_tokens
response_format
seed
structured_outputs
temperature
012
tool_choice
tools
top_logprobs
top_p
011
Additional Configuration
Tools
Guards
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