AI Side-by-Side Compare Extension

10/14/2026 20:01Browser ExtensionAIProductivity

Ask once and send to multiple AIs, compare answers side by side, no API keys

Problem: When using AI for research, you must copy the same question into multiple tabs and switch back and forth to compare. Users want to compare using already logged-in accounts instead of copy-pasting or configuring APIs.
Solution: A browser extension that opens multiple AI chat pages in split view, sends one input to all, and shows answers side by side. It reuses existing logged-in sessions, requires no API keys, and supports prompt templates with variables.
Users: Researchers, content creators, and developers who cross-validate AI answers
MVP: Split-view sending to 5-8 major AI sites; broadcast one input; layout switching (2/4/6 panes); prompt library with variable substitution; local storage, no tracking
Revenue: Free basic tier + paid unlock for more panes, prompt cloud sync, and export comparison reports
Why now: Multi-model coexistence is the norm; users don't want API keys per model; browser extension reuses login state with zero config, ideal for indie iteration