GPT-5.6 Sol vs Doubao-Seedream-4.5

OpenAI GPT-5.6 SolByteDance Doubao-Seedream-4.5
VendorOpenAIByteDance
Context window1,050,000—
Max output128,000—
ReasoningYesNo
Tool callingYesNo
File inputYesYes
Inputtext, imagetext, image
Outputtextimage
Released2026-07-092025-09-26