Copilot for Obsidian puts an AI assistant inside your Obsidian vault: chat with your notes, generate and rewrite content, and query your whole knowledge base without leaving the app. It is open source, its bring-your-own-key setup needs no Copilot license, and Opper is one of the providers in its catalogue: pick Opper, paste your key, and your vault runs on any of 700+ models, with your notes going only to the model you chose.
Copilot for ObsidianoninObsidian → Settings → Copilot → BYOK → Add a provider, search for Opper — the base URL comes prefilled, then paste your Opper key. Then pick Green R.
Green R 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 |
|---|---|---|---|---|---|
| GreenPT | EU | — | $0.40 | $1.08 |
green-r GreenPT Backed by GPT-OSS GreenPT-branded reasoning model for advanced analysis, writing, and content generation. Input €0.35 Output €0.95 Context 128k Max output 32k Released Aug 2025 Text Images Documents Multilingual Advanced reasoning Writing & content generation
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