How do I set up my Writing Engine?

Proselon does its writing with an AI engine, and the engine is the one part it does not provide. You bring an account you already hold, or a model running on your own machine, and there is no separate charge for the intelligence. So the first thing the app asks, on its very first run, is which engine you would like to write with.

Choosing an engine

On first launch Proselon opens a screen headed Choose your writing engine and lays the options out as cards. Most will be familiar. Claude writes on a Claude Pro or Max subscription. ChatGPT works on any plan, the free one included, though its free limits run out quickly. Grok runs on X Premium+ or SuperGrok, and Gemini on your Google account, whether Google AI Pro, Ultra, or the free tier. If you would rather pay nothing and keep everything on your own computer, a local model runs through Ollama or LM Studio instead.

Pick the one you already pay for. Which engine you choose matters less than writers tend to expect — a point the guides take up in the best AI for writing fiction. How the finished prose sounds depends far more on what you give the co-writer to read than on which model reads it.

Signing in

Choose a card and press Continue, and Proselon hands you that service's own sign-in. You authorise the app against the Claude, ChatGPT, Grok, or Google account you already have, and no API key is asked for, because the writing runs on the subscription you already pay each month. A local model asks for no account at all: you tell Proselon where the model is running, in Ollama or LM Studio, and it checks the connection before moving on. When the engine reports itself ready, your writing room opens and you can begin.

Changing it later

The choice is not permanent. Your engine lives in Settings, under Writing Engine, and you can switch to another whenever you like. A book drafted with one engine opens and carries on with the next. Try one for a week, change your mind, and nothing in the manuscript moves. The writing is yours, in plain files on your own computer, whichever engine you point at it.