gpt-oss-120b vs Gemini 3.5 Flash

OpenAI gpt-oss-120bGoogle Gemini 3.5 Flash
VendorOpenAIGoogle
Context window131,0721,048,576
Max output131,07265,536
ReasoningNoYes
Tool callingYesYes
File inputNoYes
Inputtexttext, image, video, audio, file
Outputtexttext
Released2026-05-19