xAI: Grok 4
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](https://docs.x.ai/docs/models/grok-4-0709)
Undisclosed
Parameters
256K tokens
Context Window
Proprietary
License
Jul 9, 2025
Released
💰 Pricing
Input
$3.00
per 1M tokens
Output
$15.00
per 1M tokens
API Available
This model is accessible via API for integration into your applications.
⭐ Related Models
Claude 3.5 Sonnet
Anthropic
The model that defined a generation. Fast, smart, and incredibly capable across coding, analysis, and creative tasks.
Claude 3.5 Haiku
Anthropic
Ultra-fast and cost-effective. Best for high-volume tasks where speed matters more than peak intelligence.
GPT-4o Mini
OpenAI
Compact and affordable. Surprisingly capable for its price point, ideal for high-volume applications.