Guides & Documentation

Everything you need to get the most out of your AI companion — from writing great personas to importing memories and connecting your own API key.

Getting Started

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Writing Great Companion Prompts

The essential guide for new users and those coming from other platforms. Understand how our system works, what makes us different, and how to write prompts that bring out the best in your companion.

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In-Depth Guides

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Persona Writing Guide

How to write your companion's personality, voice, and relationship dynamic for the most engaging interactions.

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Visual Description Writing

How to write descriptions that produce great, consistent images for your companion's profile and selfies.

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Importing Memories

Teach your companion about you instantly — import facts and preferences from ChatGPT, notes, or just type them in.

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Bring Your Own Key (BYOK)

Connect your own OpenRouter API key to unlock premium models like Claude Sonnet. Setup, fallbacks, and FAQ.

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Choosing the Right AI Model

A breakdown of every model available on Eidolon — what each one is best at, which are included, and how to pick the right one.

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