Prosie is free to use. You may write as much as you want in your own hand at no charge.
You must supply your own API keys from Anthropic, OpenAI, or OpenRouter.ai.
You are responsible for monitoring your token usage. Your chosen provider may charge you, and you are solely responsible for any fees incurred.
If you generate profanity or NSFW content, it is your responsibility to ensure your chosen LLM model supports it.
Your API keys are stored encrypted at rest and can be deleted at any time.
Documented last reviewed & updated: May 2025