GPT-5.3 Chat

Name: GPT-5.3 Chat Latest
Author: OpenAI

Chat modelGPTGPT-5.3

GPT-5.3 Chat Latest

Release date: 2026-03-01Updated: 2026-06-15 07:18:16.69011

Live demoGitHubHugging FaceCompare

Parameters

Not disclosed

Context length

No data

Chinese support

Not supported

Reasoning ability

GPT-5.3 Chat Latest is an AI model published by OpenAI, released on 2026-03-01, for Chat model, with a 59.99 score on LiveBench.

Data sourced primarily from official releases (GitHub, Hugging Face, papers), then benchmark leaderboards, then third-party evaluators. Learn about our data methodology

GPT-5.3 Chat

Model basics

Reasoning traces

Not supported

Thinking modes

Thinking modes not supported

Context length

No data

Max output length

No data

Model type

Chat model

Modality (in / out)

Text, Image → Text

Release date

2026-03-01

Model file size

No data

MoE architecture

Total params / Active params

No data / N/A

Knowledge cutoff

No data

GPT-5.3 Chat

Open source & experience

Code license

Proprietary

Weights license

Proprietary

GitHub repo

GitHub link unavailable

Hugging Face

Hugging Face link unavailable

Live demo

No live demo

GPT-5.3 Chat

Official resources

Paper

No paper available

DataLearnerAI blog

No blog post yet

GPT-5.3 Chat

API details

API speed

No data

No public API pricing yet.

GPT-5.3 Chat

Benchmark Results

GPT-5.3 Chat currently shows benchmark results led by LiveBench (69 / 115, score 60). This page also consolidates core specs, context limits, and API pricing so you can evaluate the model from benchmark results and deployment constraints together.