GPT-5.3-Codex

Model

by OpenAI

Vendor:OpenAI
│
Context Window:400,000 tokens
│
Max Output:128,000 tokens

Find on AI Platforms

HuggingFace

View model card and weights

→

Artificial Analysis

AI model leaderboard and benchmarks

→

OpenRouter

Compare and use multiple AI models

→

Specifications

Total Context

400.0K

Max Output

128.0K

Pricing

GlobalUS Dollar

Input $1.75 / 1M tokens

Output $14.00 / 1M tokens

Cache read $0.175 / 1M tokens