OpenAI: GPT-5.3 Chat

GPT

Multimodal

Paid

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 reduces unnecessary refusals, caveats, and overly cautious phrasing that can interrupt conversational flow.

Parameters

Context Window

128,000

tokens

Input Price

$1.75

per 1M tokens

Output Price

$14

per 1M tokens

Capabilities

Model capabilities and supported modalities

Performance

Reasoning

Math

Coding

Knowledge

Modalities

Input Modalities

text,image,file

Output Modalities

text

LLM Price Calculator

Calculate the cost of using this model

Input Tokens (0.00000175/token)$0.002625

Output Tokens (0.00001400/token)$0.042000

Common Scenarios:

Input Cost:$0.002625

Output Cost:$0.042000

Total Cost:$0.044625

Estimated usage: 4,500 tokens

Monthly Cost Estimator

Based on different usage levels

Light Usage

$0.1575

~10 requests

Moderate Usage

$1.5750

~100 requests

Heavy Usage

$15.7500

~1000 requests

Enterprise

$157.5000

~10,000 requests

Note: Estimates based on current token count settings per request.

Last Updated: 2026/04/01