GPT-5.6 in Hermes Agent: Setup, Reasoning Level & 3 Use Cases

Key Takeaways

• Set the model in the dashboard. Run hermes dashboard, open Models, change the main model, type Codex, and choose OpenAI Codex to select GPT-5.6 Soul. Soul is the top tier of the 5.6 family, above Terra and Luna.
• Tune reasoning to medium. In Telegram, send /reasoning medium. Alex tested every level and found medium the sweet spot; low is a solid second choice for speed. High/extra-high/ultra overthink, burn tokens, and drop instructions. On the $20/month plan he suggests low.
• Cost and capability. GPT-5.6 in a subscription replaces the hundreds of dollars a day he was spending on the Opus API, while giving better computer use — controlling the browser, taking screenshots, and running local models.
• Use case 1 — home AI lab. Prompt Hermes to read your machine's specs, browse Hugging Face for the best local model it can run, and list use cases — then build a control panel to monitor and chat with the models running on each of your computers.
• Use case 2 — autonomous game studio. He has Hermes drive Unity end-to-end — generating assets, characters, environments, and lighting for playable 3D games — and rates Unity the engine agents handle most completely.
• Use case 3 — price-drop monitoring. A Hermes cron job checks a site daily (his example: Micro Center for RTX 5090 stock and price drops) and texts him on a change — a handy pattern for scarce hardware.
• Honest caveat: he still finds Claude more decisive with a stronger "personality"; GPT-5.6 tends to agree and change its mind when challenged. He also frames Hermes-vs-OpenClaw as a reliability preference, not a benchmark result.

Commands & Code Mentioned

hermes dashboard
/reasoning medium