Claude Sonnet 4.5 vs GPT Image 1.0

Anthropic Claude Claude Sonnet 4.5OpenAI GPT Image 1.0
VendorAnthropic ClaudeOpenAI
Context window200,000128,000
Max output64,000—
ReasoningYesNo
Tool callingYesNo
File inputYesYes
Inputtext, image, filetext, image
Outputtextimage
Released2025-09-292025-04-23