OpenAI

GPT-5.3 Chat

gpt-5.3-chat-latest

A chat-tuned model for conversational assistance, writing, and tool workflows

Chat-tuned GPT model for conversational assistance, writing, and tool workflows

128K context128K context
Released2026-03-03
Relays5 sites
text generationtool use

Model information

Model ID
gpt-5.3-chat-latest
Context
128K
Max input
-
Max output
16.4K
Knowledge cutoff
2025-08-31
Open weights
Not supported
License
-
Release date
2026-03-03

Input

Text: SupportedImage: SupportedAudio: Not supportedVideo: Not supportedPDF: Not supportedFile: Supported

Output

Text: SupportedImage: Not supportedAudio: Not supportedVideo: Not supported

API capabilities

Reasoning: Not supportedTool call: SupportedStructured output: UnknownTemperature: Supported

OpenAI Official Pricing

CNY
Updated: 2026-10-04T22:55:13.051+08:00

Input

~¥11.706/ 1M tokens

Output

~¥93.651/ 1M tokens

Cache read

~¥1.171/ 1M tokens

Relay Comparison

Compare token, per-request, or per-second pricing by relay channel.

How should GPT-5.3 Chat relay pricing be compared?

This GPT-5.3 Chat pricing page compares official pricing with public prices from 5 listed AI gateways. Token prices are shown in CNY per 1M tokens, while per-request, per-second, and per-character rows use the unit shown in the table. Last updated: 10/23/2026, 08:13.

Data sources
Public price catalogs, official pricing records, and monitoring results.
Metric definitions
Uptime means successful probe response rate, fake-rate signals possible model mismatch or abnormal output risk, and latency is average API response time.
Risk note
Relay gateways are third-party services. Pricing, billing, privacy, and stability can change; start with a small top-up and verify reliability before continued use.