1. Monica AI
AI copilot for chat, translation and writing on any site.
Why it replaces Merlin AI: Another AI extension worth comparing against Merlin AI.
Best Merlin AI Alternatives in 2026
Merlin AI is a strong option, but it is not the right fit for everyone. Below are 3 alternatives compared on rating, install base, pricing and the use case each one actually wins on.
About Merlin AI
Merlin adds a keyboard-triggered AI sidebar to every page. It can summarise the current article, answer questions about it, draft replies in Gmail and generate social posts, switching between several underlying models.
Comparison at a glance
| Extension | Rating | Users | Pricing | Best for |
|---|---|---|---|---|
| Merlin AI (original) | 4.8 | 900K+ | Freemium | Generalists who want a single AI sidebar instead of five separate AI extensions. |
| Monica AI | 4.9 | 3M+ | Freemium | People who want templates and translation alongside a general AI chat panel. |
| Perplexity | 3.8 | 400K+ | Freemium | Researchers and analysts who need answers they can trace back to a source. |
| ChatGPT for Google | 0.0 | 0 | Free | Searchers who want a synthesised answer without abandoning normal search results. |
Merlin AI alternatives in detail
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2. Perplexity
Answer engine with cited sources built into the browser.
Why it replaces Merlin AI: Another AI extension worth comparing against Merlin AI.
3. ChatGPT for Google
Shows AI answers alongside your normal search results.
Why it replaces Merlin AI: Another AI extension worth comparing against Merlin AI.
Compare Merlin AI head-to-head
Direct comparisons with the extensions people weigh against it.
Monica vs Merlin AITwo all-in-one AI sidebars compared on model access, free quota and page context.Merlin AI vs PerplexityBoth are ai extensions people shortlist together for ai — see how ratings, install base, pricing and day-to-day use differ.Merlin AI vs ChatGPT for GoogleBoth are ai extensions people shortlist together for ai — see how ratings, install base, pricing and day-to-day use differ.All comparisonsThe full compare hub, grouped by category.
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Frequently asked questions
What is the best alternative to Merlin AI?
Monica AI is the closest match. Another AI extension worth comparing against Merlin AI.
Is there a free alternative to Merlin AI?
Yes — ChatGPT for Google are free.
Why switch away from Merlin AI?
Common reasons are pricing, missing sync or team features, and specific limitations: Daily query limits on free plan; Sidebar can overlap page UI.