Is it free? Yes. OpenSide is freeware. AI usage fees depend on the plan for the AI account or API key you use.
Does it show ads? No. There are no ads.
Can I use it without installing it? Yes. Extract the portable version (ZIP) and run OpenSide.exe.
Can I use AI services other than ChatGPT? Yes. Add your Claude, OpenAI, and Gemini API keys, then switch between them right from the chat screen.
Can I use the browser while the AI is working? Yes. The AI only operates in the tab where it is working, so you can continue what you were doing in other tabs.