Open Muse Chat – Unified workspace for multiple OpenRouter LLMs

Summary: Open Muse Chat is an AI chat workspace that connects to any OpenRouter language model, enabling users to customize prompts, parameters, and reasoning modes. It supports web search and uploading PDFs or images, organizing interactions into projects and branched conversations to maintain context.

What it does

It integrates multiple OpenRouter LLMs into one interface, allowing full customization of system prompts, temperature, top-p, top-k, max tokens, and reasoning modes when available. Users can search the web and upload documents or images to chat with their own content while organizing work into projects and branches.

Who it's for

Makers, indie hackers, developers, and researchers who experiment with or compare different models and need structured management of long-running AI projects.

Why it matters

It addresses the lack of control and organization in single-model chat apps by providing customizable settings and project-based workflows for multi-model AI use.