GLM 5.1 vs Gemini 3 Flash Preview

Z.ai GLM 5.1Google Gemini 3 Flash Preview
VendorZ.aiGoogle
Context window200,0001,048,576
Max output128,00065,536
ReasoningYesYes
Tool callingYesYes
File inputNoYes
Inputtexttext, image, video, audio, file
Outputtexttext
Released2026-04-072025-12-17