ModelCostWatch logoModelCostWatch

Model

GPT-5.1-Codex

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

View official pricing

Pricing

Pricing

Not published

Batch discount

Not published

Model details

Provider

OpenAI

Family

gpt

Model ID

gpt-5.1-codex

Availability

Deprecated

Access

Direct API

Supports

text · image

Context window

400,000

Max output

128,000

Recommended for

Coding agent cost calculator

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

Recent updates

Added to the model directory.

2026-09-03

Model details changed in the provider's documentation.

2026-09-03