GPT Image 2 Develop vs Claude Sonnet 5.5

OpenAI GPT Image 2 DevelopAnthropic Claude Claude Sonnet 5.5
VendorOpenAIAnthropic Claude
Context window128,0001,000,000
Max output—128,000
ReasoningNoYes
Tool callingNoYes
File inputYesYes
Inputtext, imagetext, image, file
Outputimagetext
Released2026-04-202026-09-28