Muse Spark 1.1 vs gpt-5-pro

Meta Muse Spark 1.1OpenAI gpt-5-pro
VendorMetaOpenAI
Context window1,048,576400,000
Max output—272,000
ReasoningYesYes
Tool callingYesYes
File inputYesYes
Inputtext, image, video, file, audiotext, image
Outputtexttext
Released2026-07-092025-08-07