Run Claude Cowork on GPT-5
Claude Cowork is Anthropic's agent for knowledge work — the same agentic engine as Claude Code, but built for non-technical tasks inside the Claude desktop app, with no terminal required. Give it a goal and it works across your local files, folders, and applications, planning and carrying out the task while you steer, and it's aimed at research, analysis, operations, legal, and finance teams. On Opper it runs on any of 300+ models, not just Claude: point it at Opper's Anthropic-compatible gateway and keep inference in the EU or US on one key.
Claude CoworkoninConnect Claude Cowork to GPT-5
Use your Opper API key as the Anthropic key. In Cowork: Help → Enable Developer Mode, restart, then Developer → Configure Third-party inference → Gateway (Anthropic-compatible). Browse every id in the model catalogue.
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.
The model
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