ChatDuel

Split-screen multi-AI comparison workspace. No API keys, no data collection.

ChatDuel is a split-screen multi-AI comparison workspace. It lets you ask the same question across supported AI web apps, compare answers side by side, and summarize consensus, disagreements, and next steps. ChatDuel does not use LLM APIs and does not require API keys. It works with the official AI web pages you are already logged into, so you can keep using your existing free or subscription accounts. Key features: - Ask once and send to multiple AI services - Compare answers in one workspace - Summarize shared opinions and disagreements - Forward one AI answer to another AI for review - Keep records locally for review, export, and summarization Privacy: ChatDuel does not collect or store your chat content, AI responses, account credentials, or browsing history. Local records stay on your device. The extension only requests a configuration endpoint to keep page selectors working when official AI websites change.