Run Voidleap Code on GPT-4.1
Voidleap Code is a desktop agentic IDE from Voidleap that runs on your own machine, with every agent, skill, hook, and security rule left editable. You can change model in the middle of a thread, planning on one, implementing on another, and reviewing on a third without starting over, then read back the tokens, cost, latency, and cache hit rate for each. Opper ships inside the app as a provider rather than a base URL override, so you add your key once in settings and pick Opper models per turn.
Voidleap CodeoninConnect Voidleap Code to GPT-4.1
Add Opper in Voidleap Code
In Voidleap Code, go to Settings → Providers → Add Provider, choose Opper, and paste your API key. Then pick GPT-4.1.
Where you can run it
GPT-4.1 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 | $2.00 | $8.00 |
The model
More apps on Opper
Claude Code
Anthropic's terminal coding agent. Run it on any model on Opper, not just Claude.
opper launch claude
Codex
OpenAI's open-source coding CLI. Run it on any model on Opper.
opper launch codex
DeepSeek Harness
DeepSeek's open-source coding agent. Add Opper as a custom provider to run it on any model, not just DeepSeek's.
OpenAI-compatible