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 GPT OSS 20b.
GPT OSS 20b 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.
| Provider | Region | Zero data retention | Training | Input | Output | Cache read | ||
|---|---|---|---|---|---|---|---|---|
| EU | No | $0.07 | $0.30 | Input price | ||||
| EU/EEA | No | $0.03 | $0.14 | Input price | Not offered on this route | Not offered on this route | ||
| EU | No | $0.0090 | $0.04 | $0.0045 | Not offered on this route | Not offered on this route | ||
| EU | No | $0.11 | $0.47 | Input price | Not offered on this route | Not offered on this route | ||
| US | No | $0.05 | $0.45 | Input price | Not offered on this route | Not offered on this route | ||
| US | No | $0.03 | $0.14 | Input price | Not offered on this route | Not offered on this route | ||
| US | No | $0.07 | $0.30 | $0.04 | Not offered on this route | Not offered on this route |
GPT-OSS 20B by OpenAI: open-weight Apache 2.0 model, 21B params (3.6B active), near o3-mini, for efficient and on-device reasoning.
Step-by-step setup for running Copilot for Obsidian on each of these models through Opper.
Anthropic's desktop agent for knowledge work. Run it on any model on Opper, not just Claude.
Anthropic-compatible
An open-source personal agent for everyday tasks. Run it on any model on Opper.
opper launch openclaw
Nous Research's open agent. Run it on any model on Opper.
opper launch hermes