Hermes is an open agent from Nous Research, the team behind the Hermes family of open-weight models. It runs as a terminal agent for general assistant and tool-use workflows, designed in the open and built to be steerable and unopinionated rather than locked down. On Opper it runs on a single key across 700+ models with full observability and a choice of region.
HermesoninPaste this into your coding agent (Claude Code, Cursor, Codex, and more) and it will set up and build with Opper for you.
GPT-6 Luna Decisions 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 | Cache read |
|---|---|---|---|---|---|---|
| US | No | $0.10 | $0 | Input price |
OpenAI Decisions model: typed predicate, choice and score answers with probabilities and confidence. Text and inline base64 image input. Use POST /v3/compat/decisions (OpenAI Decisions format; a bare gpt-6-luna resolves here) or POST /v3/compat/v1/systemone with model openai/gpt-6-luna-decisions (System One format, text only).
Step-by-step setup for running Hermes on each of these models through Opper.
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Anthropic-compatible
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The AI copilot for Obsidian notes. Pick Opper from its provider list and chat with your vault on any of 700+ models.
Opper built in