gpt-4o-all vs grok-4-fast-non-reasoning

OpenAI gpt-4o-allxAI grok-4-fast-non-reasoning
VendorOpenAIxAI
Context window—2,097,152
Max output—30,000
ReasoningNoNo
Tool callingNoYes
File inputNoYes
Input—text, image
Output—text
Released—2025-08-27