AI Models Directory
OpenAI
OpenAI

GPT-5.3 Chat (latest)

A fast decision page for teams comparing performance, cost, context window, and critical capabilities without digging through raw specs.

Max Context (In)

128K

Max Output (Out)

16K

Input (1M tokens)

$1.75

Output (1M tokens)

$14.00

Quick signals

  • Provider: OpenAI
  • Inputs: text, image
  • Latest update: 2026-03-03

Usage profile

  • Context window: 128K
  • Max output: 16K
  • Open weights: No

Capabilities

Vision
Tool Calling
Structured Output (JSON)
File Attachments
Reasoning
Open Source