📖 The AI Tool Bible

Gemini Advanced vs Merlin AI

A side-by-side look at pricing, capabilities, pros, cons, and our editorial scores.

 
Gemini Advanced
Writing
Merlin AI
Writing
TaglineGoogle's flagship — strong at math, long context, and Workspace integration.Browser-based multi-model AI assistant that puts GPT-4, Claude, and Gemini one keystroke away on any webpage.
CategoryWritingWriting
PricingPaid· $20/mo via Google One AI PremiumFreemium· Free tier; Pro around $19/month
ModelGemini 2.5 ProMulti-model (GPT-4o, Claude 3.7, Gemini 2.5, Llama 3.1, Mistral, Deepseek)
Editorial score9.0 / 10—
Use cases
Workspace integrationmathlong contextresearch
webpage-summarizationyoutube-summariesemail-draftingmulti-model-chatimage-generationcontent-rewriting
Pros
  • Excellent Google Workspace integration
  • Very long context window
  • Strong on STEM tasks
  • Cheapest frontier bundle
  • One subscription unlocks 20+ frontier and open-source models side by side
  • Sidebar extension works on any webpage, including YouTube and Gmail
  • Generous free tier with unlimited YouTube summaries
  • Bundles image generation alongside text chat
Cons
  • UX still less polished than ChatGPT/Claude
  • Refusals can be inconsistent
  • Limited fine-tuning controls
  • Thin wrapper over upstream APIs with no fine-tuning or training
  • No serious agentic or tool-use capabilities
  • Quality and rate limits depend on third-party provider quotas
  • Redundant if you already pay for ChatGPT Plus or Claude Pro
Websitegemini.google.comwww.getmerlin.in
Pick Gemini Advanced if
  • ✅ Excellent Google Workspace integration
  • ✅ Very long context window
  • ✅ Strong on STEM tasks
  • ✅ Cheapest frontier bundle
Pick Merlin AI if
  • ✅ One subscription unlocks 20+ frontier and open-source models side by side
  • ✅ Sidebar extension works on any webpage, including YouTube and Gmail
  • ✅ Generous free tier with unlimited YouTube summaries
  • ✅ Bundles image generation alongside text chat
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