gpt-5-nano vs gpt-4o-all

OpenAI gpt-5-nanoOpenAI gpt-4o-all
VendorOpenAIOpenAI
Context window400,000—
Max output128,000—
ReasoningYesNo
Tool callingYesNo
File inputYesNo
Inputtext, image—
Outputtext—
Released2025-08-07—