GPT-5.6 Sol vs Muse Spark 1.1

OpenAI GPT-5.6 SolMeta Muse Spark 1.1
VendorOpenAIMeta
Context window1,050,0001,048,576
Max output128,000—
ReasoningYesYes
Tool callingYesYes
File inputYesYes
Inputtext, imagetext, image, video, file, audio
Outputtexttext
Released2026-07-092026-07-09