Our Verdict
Merlin AI puts several top AI models (OpenAI, Claude, Gemini, DeepSeek, Mistral and others) behind one subscription, in a web chat and a browser extension that works on top of Google, Gmail, YouTube and other sites. Pro adds summaries of PDFs, websites and YouTube videos, image generation, spreadsheet analysis, Projects for knowledge bases, app connections via MCP and a prompt library. The free plan gives 102 requests a day. Pro costs $29 a month, or $19 a month billed $228 a year, and Teams costs $15 per seat per month billed yearly with a 5-seat minimum. The catch is how usage is counted: bigger models cost more queries per message (Merlin publishes the ratios and changes them as its costs change), web search doubles the cost, and Pro has fair-use limits rather than truly unlimited use. If you mainly use one model all day, a direct subscription may serve you better; if you want to switch between models and use AI inside your browser, Merlin is good value. Our readers get 20% off with code MERLIN20. This verdict is built from Merlin's own published pages — RankerToolAI has not run a hands-on lab test of Merlin.
How Merlin AI Scores
| Criterion | Score | Rating |
|---|---|---|
| Model Choice OpenAI, Claude, Gemini, DeepSeek, Mistral |
8.5/10 | |
| Browser Features Extension, page and YouTube summaries |
8.0/10 | |
| Usage Clarity Query cost varies by model and changes |
6.5/10 | |
| Value for Money Pro $19/mo yearly; 20% off with MERLIN20 |
8.0/10 | |
| Transparency Published query ratios; fair-use limits |
7.0/10 |
✓ Pros
- Many leading AI models in one subscription
- Free plan with 102 requests a day
- Browser extension with page, PDF and YouTube summaries
- Projects, spreadsheet analysis and MCP app connections on Pro
- 20% off with our code MERLIN20
✗ Cons
- Large models use many queries per message, so the allowance drains fast
- Web search doubles the query cost
- Pro is fair-use limited, not unlimited
- Query ratios change as Merlin's costs change
- Teams needs at least 5 seats
Merlin AI
Free 102 queries/day · Pro $29/mo or $19/mo billed yearly · Teams from $15/seat (min 5) · 20% off with code MERLIN20
What Merlin AI Offers
Multi-Model Chat
Switch between OpenAI, Claude, Gemini, DeepSeek, Mistral and other models in one chat.
Browser Extension
Use AI on top of Google search, Gmail and other sites without opening a new tab.
Summaries
Quick summaries of PDFs, websites and YouTube videos.
Image Generation
Advanced image models in the same plan.
Projects & Spreadsheets
Knowledge-base Projects and spreadsheet analysis on Pro.
MCP Connections
Connect 10+ apps through MCP on Pro.
Merlin AI Pricing (2026)
| Plan | Price | Details |
|---|---|---|
| Free | $0 | 102 requests per day · try advanced features |
| Pro ⭐ | $29/mo · $19/mo yearly | 30x usage of the latest models · summaries · image generation · Projects · MCP · priority support |
| Teams | $19/seat/mo · $15/seat yearly | Everything in Pro · team admin · central billing · minimum 5 seats |
Use code MERLIN20 for 20% off. Smaller Pro (mini) plans with about a fifth of Pro's usage are also offered on some pages. Check Merlin's current pricing before you subscribe.
Try Merlin AI
Free 102 queries/day · Pro $29/mo or $19/mo billed yearly · Teams from $15/seat (min 5) · 20% off with code MERLIN20
Try Merlin AI →Affiliate link — we earn a commission if you upgrade, at no extra cost to you.
Best Merlin AI Alternatives
Merlin AI isn't the only option in this space. Here's how the leading alternatives compare:
- ChatGPT Plus — Best if you mainly use OpenAI models and want their newest features first; $20/mo for one provider.
- Claude Pro — Best if you mainly write or code with Claude; $20/mo for one provider.
Frequently Asked Questions
Is Merlin AI free?
Yes. The free plan gives 102 requests per day, reloading every 24 hours.
How much is Merlin Pro?
$29 per month, or $19 per month billed $228 a year. Code MERLIN20 takes 20% off.
Is Merlin Pro unlimited?
No. Pro has fair-use limits, and bigger models use more queries per message than smaller ones.
Which AI models does Merlin include?
Models from OpenAI, Anthropic (Claude), Google (Gemini), DeepSeek and Mistral, among others; the list changes as new models launch.