Run Codex on GPT-5

by OpenAICoding agent

Codex is OpenAI's open-source coding agent for the terminal. It works from natural-language instructions to edit code across your project, run commands, and complete tasks end to end, with its source available on GitHub under Apache-2.0. On Opper, launch it on GPT, Claude, Gemini, DeepSeek and 300+ more — one key, automatic fallbacks, and a choice of region.

Run

Codexonin

Launch Codex on GPT-5

Copy the command for the provider you want.

After installing, run opper login once — then the copied command launches Codex on GPT-5 through Opper.

Where you can run it

GPT-5 runs on the routes below. Route only to EU providers when your data has to stay in Europe.

Provider	Region	Zero data retention	Training	Input	Output
Azure	EU	Enterprise	No	$1.25	$10.00
OpenAI	US	Enterprise	No	$1.25	$10.00

The model

GPT-5 from OpenAI — text model on the Opper gateway.

Available on

AzureEUOpenAIUS

Pricing from$1.25/ 1M input$10.00/ 1M output272Kcontext

Privacy

Zero data retention: Enterprise
Training: No
Region: EU + US

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