Block Enter records 0 monthly visits with — month-over-month growth and Free pricing. Merlin AI records 1,382,634 monthly visits with +13.1% growth and Freemium pricing.
Stop accidental sends in ChatGPT, Gemini, Claude and Perplexity
One AI assistant that plugs ChatGPT, Claude and Gemini into every tab
| Dimension / Metric | | |
|---|---|---|
| Official Domain | chromewebstore.google.com | getmerlin.in |
| Pricing Model | Free | Freemium |
| Monthly Visits | 0 (0) | 1.38M (1,382,634) |
| MoM Traffic Delta | 0 (—) | +159.85K (+13.1%) |
| Primary Market & Share | 🌐 Global (—) | 🇺🇸 United States (15%) |
| Direct Visits / mo | 0 | 695.32K |
| User Rating | 4.2 | 4.3 |
| Supported Platforms | Browser Extension | Browser Extension |
Stop accidental sends in ChatGPT, Gemini, Claude and Perplexity
Pressing Enter inside a supported AI chat box inserts a line break instead of firing the message off to the model.
Deliberate submission stays available through the modifier-key shortcut, so nothing about your normal workflow is lost.
Works on ChatGPT, Google Gemini, Claude and Perplexity AI, with the supported-service list refreshed as new chat UIs launch.
Configure once and the behaviour follows you between tabs and signed-in Chrome profiles.
One AI assistant that plugs ChatGPT, Claude and Gemini into every tab
Switch between GPT, Claude, Gemini, DeepSeek, Mistral and Llama class models from a single interface instead of juggling separate subscriptions.
Summarize articles, YouTube videos, PDFs and documents in place, then ask follow-up questions grounded in that content.
Draft and reply to emails in Gmail, compose posts and comments for X and LinkedIn, and repurpose web pages or videos into blogs and articles.
Generate images from prompts using more than 20 image models and multiple aspect ratios for web and social output.
SpecialistProvides superior core reasoning and advanced coding agents, but lacks Merlin's seamless one-click browser tab integration and sidebar shortcuts.
SpecialistProvides superior core reasoning and advanced coding agents, but lacks Merlin's seamless one-click browser tab integration and sidebar shortcuts.
SpecialistOffers massive context windows and Google Workspace integration, but functions as a standalone web app rather than an inline sidebar.
SpecialistOffers massive context windows and Google Workspace integration, but functions as a standalone web app rather than an inline sidebar.
SpecialistExcels at nuanced document analysis and writing, but operates as a dedicated web workspace rather than a browser extension.
SpecialistExcels at nuanced document analysis and writing, but operates as a dedicated web workspace rather than a browser extension.
SpecialistDelivers superior citation-backed web research and real-time search, but lacks Merlin's multi-purpose browser writing tools and sidebar utilities.
SpecialistDelivers superior citation-backed web research and real-time search, but lacks Merlin's multi-purpose browser writing tools and sidebar utilities.
Aggregates diverse frontier models into one conversational interface, but operates primarily as a web/app client rather than a native extension.
Aggregates diverse frontier models into one conversational interface, but operates primarily as a web/app client rather than a native extension.
Provides comparable all-in-one browser assistance and multi-model chat, but includes more robust built-in painting and drawing suites.
Provides comparable all-in-one browser assistance and multi-model chat, but includes more robust built-in painting and drawing suites.
Offers a similar browser sidebar experience with multi-model support, but features cleaner tab integration and smoother reading tools.
Offers a similar browser sidebar experience with multi-model support, but features cleaner tab integration and smoother reading tools.
An extendable launcher that puts your tools, AI, and automations one keystroke away
An extendable launcher that puts your tools, AI, and automations one keystroke away
A prompt library and management layer for ChatGPT and other AI models
A prompt library and management layer for ChatGPT and other AI models
SpecialistIntegrates AI directly into an independent browser environment, whereas Merlin runs as an extension across existing browsers.
SpecialistIntegrates AI directly into an independent browser environment, whereas Merlin runs as an extension across existing browsers.
Delivers a cross-platform AI chat client with local file Q&A, but requires desktop installation rather than browser extension access.
Delivers a cross-platform AI chat client with local file Q&A, but requires desktop installation rather than browser extension access.
Combines browser AI chat with advanced web automation and data extraction, though with a steeper learning curve.
