GPT-5.3 Chat
gpt-5.3-chat
ProprietaryMultimodal
About
GPT-5.3 Chat is an update to ChatGPT's most-used model making everyday conversations smoother and more useful, optimized for low-latency multimodal dialogue at 128K context.
GPT-5.3 Chat has a 128K-token context window.
Capabilities
VisionMultimodalReasoningFunction CallingTool UseStructured OutputsCode Execution
