# OpenAI: GPT-5.3 Chat

Provider: openai  
Category: llm  
Model ID: `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...

## Specs

- Context length: 128000 tokens
- Max output: 16384 tokens
- Modalities: text, image, file
- Released: 2026-03-03

## Pricing

- Input: $1.75 per million tokens
- Output: $14.00 per million tokens

## Providers

- **openai** — ctx 128000, input $1.75/M, output $14.00/M

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Last verified: 2026-04-23T23:46:29.618Z  
Canonical URL: https://switchy.build/models/gpt-5-3-chat