Models / OpenAI

OpenAI: GPT-5.3 Chat

openai/gpt-5.3-chat

GPT-5.3 Chat is an update to ChatGPT's most-used model that makes everyday conversations smoother, more useful, and more directly helpful. It delivers more accurate answers with better contextualization and significantly...

Source-linkedClosed weights

Report data

Context window128K

Maximum output16.384K

Provider offers0

Knowledge cutoffUndisclosed

Capabilities

What this model supports

ReasoningNo

Tool callingNo

Structured outputNo

AttachmentsNo

Temperature controlNo

Open weightsNo

Creator: OpenAI
Family: Not documented
Modalities: File, Image, Text
License: Not documented
Release date: Not documented
Model ID: openai/gpt-5.3-chat

Market availability

Provider pricing

Report price →

No known providers available.

Evidence

Published benchmark results

Insufficient benchmark coverage. ModelBench does not infer a score from price, context size, or model name.