Run Codex on GPT-5

Name: Codex
Author: OpenAI

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

Set up with agents

Paste this into your coding agent (Claude Code, Cursor, Codex, and more) and it will set up and build with Opper for you.

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

by OpenAI

GPT-5 by OpenAI, multimodal reasoning model with a 272K-token context window for coding, analysis, and agentic work.

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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