Model

GPT-5.3-Codex

OpenAI pricing data current as of 2026-09-03.

Pricing

/ 1M tokens

$1.75 input · $0.175 cached input · $14.00 output

Batch discount

50%

Provider

OpenAI

Family

gpt

Model ID

gpt-5.3-codex

Availability

Active

Access

Direct API

Supports

text · image

Context window

400,000

Max output

128,000

Coding agent cost calculator

Estimate output-heavy coding assistant usage where long generations can dominate cost.

Added to the model directory.

2026-09-03

Model details changed in the provider's documentation.

2026-09-03