GPT-5.5 Pro uses extended reasoning compute to deliver OpenAI's strongest answers, built for the hardest tasks, long-running workflows, and deep analysis.
Available on
Privacy
- ZDR
- Training
- No
- Region
- US
GitHub Copilot CLI brings Copilot's coding agent to the terminal: it reads your repository, edits files, runs commands, and completes tasks from natural-language prompts. It supports custom model providers through plain environment variables, and with a custom provider configured it runs without a Copilot plan or even a GitHub login. Point it at Opper's OpenAI-compatible gateway and it works with any of 700+ models, with fallbacks and a choice of region on one key.
Paste this into your coding agent (Claude Code, Cursor, Codex, and more) and it will set up and build with Opper for you.
GPT-5.5 pro 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 |
|---|---|---|---|---|---|
| OpenAI | US | No | $30.00 | $180.00 |
GPT-5.5 Pro uses extended reasoning compute to deliver OpenAI's strongest answers, built for the hardest tasks, long-running workflows, and deep analysis.
Anthropic's terminal coding agent. Run it on any model on Opper, not just Claude.
opper launch claudeOpenAI's open-source coding CLI. Run it on any model on Opper.
opper launch codexDeepSeek's open-source coding agent. Add Opper as a custom provider to run it on any model, not just DeepSeek's.
OpenAI-compatible