Codex
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.
CodexoninLaunch Codex on Opper
Install the Opper CLI, log in once, then launch it on the model you want.
After installing, run opper login once — then the command above launches Codex on any model through Opper.
Run Codex on these models
Run Codex across our providers
On Opper, Codex can reach every provider in the catalogue. Pick where your inference runs, keep it in the EU when you need to, and use zero data retention on supported routes.
More apps on Opper
Claude Code
Anthropic's terminal coding agent. Run it on any model on Opper, not just Claude.
opper launch claude
OpenCode
An open-source, model-agnostic coding agent for the terminal, wired to Opper's catalogue.
opper launch opencode
Pi
A lightweight open coding agent. Run it on any model through Opper.
opper launch pi