Run OpenCode on GPT-5
OpenCode is SST's open-source coding agent for the terminal. It runs as a fast, keyboard-driven TUI, works across your whole codebase, and was designed from the start to be provider-agnostic rather than tied to a single model. On Opper you get a single key to 700+ models behind it, transparent pass-through pricing, and a choice of EU or US hosting.
OpenCodeoninLaunch OpenCode 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. One route also sells flex and priority processing: the same model at another price, picked per request with service_tier. How service tiers work.
The model
Run OpenCode on other models
Step-by-step setup for running OpenCode on each of these models through Opper.
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