# DeckAssistant vs Merlin AI

DeckAssistant records 173 monthly visits with -89.9% month-over-month growth and Free Trial, Paid pricing. Merlin AI records 1,382,634 monthly visits with +13.1% growth and Freemium pricing.

| Metric | [DeckAssistant](https://openaitools.app/tool/deckassistant) | [Merlin AI](https://openaitools.app/tool/merlin-ai) |
| :--- | :--- | :--- |
| Website URL | https://deckassistant.io | https://www.getmerlin.in |
| Categories | AI Assistant, AI Chatbot, AI Writing Assistants, AI Image Generator | AI Assistant, AI Writing Assistants, AI Summarizer, AI Research Tool |
| Pricing Model | Free Trial, Paid | Freemium |
| Monthly Visits | 173 | 1,382,634 |
| MoM Growth Rate | -89.9% | +13.1% |
| Primary Market | France | United States |
| Direct Visits | 70 | 695,322 |
| Review Score | 4.2 | 4.3 |
| Saved Count | 3 | 12 |
| Supported Platforms | Website | Website |

## DeckAssistant

DeckAssistant is a Stream Deck plugin built for people who constantly shuttle text between applications and an AI chat. Instead of copying a paragraph, switching windows, pasting and copying the answer back, you select the text and press a mapped key. The plugin sends the selection to the AI with the prompt you configured on that button and returns the result, so the round trip becomes a single physical action.

The plugin pairs with a web application that is designed as a more workable ChatGPT interface. There you get folders to organise chats, custom prompts, message editing, history search, favourites, data export, screenshot export, a prompt library and shareable chats, plus Google lookups and image generation. Conversations started from a Stream Deck button continue in the web app, so the button becomes a shortcut into an organised workspace rather than a disposable one-off query.

Setup follows four steps: create an account, copy the API token from your dashboard, install the plugin and paste the token into a button. It runs on macOS 11 or later, on both Intel and Apple Silicon. The product is developed by Martijn Smit under the Lostdomain label and is licensed with a documented licence agreement, refund policy and terms of service. It is aimed at writers, developers, support staff and anyone who wants a consistent, quick AI workflow rather than ad-hoc prompting.

**Pricing & Plans:** Paid software purchased from the vendor, with a licence agreement and refund policy; discounts have been offered at checkout. See the official pricing page for current plans.

- **Process selected text with one key:** Select text in any app, press a key, and the AI processes it in place — no more copy-pasting into a chat window.
- **Custom prompts per button:** Every button can hold its own prompt; pick from the included examples or write your own for rewriting, translating, summarizing and more.
- **Better ChatGPT web interface:** Continue any conversation in the web app with folders, favourites, history search, message editing and prompt library.
- **Export, search and image generation:** Export chats, export screenshots, run Google lookups and generate images without leaving the conversation.

**Strengths:** Turns text processing into a single keypress in any application; Per-button custom prompts make repeated tasks consistent; Web app adds organisation ChatGPT lacks: folders, search, prompt library; Documented licence, refund policy and terms

**Limitations:** Requires a Stream Deck device and macOS 11 or later; Needs an account and an API token before any button works

[Profile (Markdown)](https://openaitools.app/tool/deckassistant.md)

## Merlin AI

Merlin AI lowers the friction of using large language models by putting them where you already are: in the browser sidebar, over the page you are reading. A one-click shortcut summarizes articles, answers questions about a long PDF or YouTube video, drafts a reply in Gmail or LinkedIn, or explains a selection of code, so you avoid copying text into a separate chat window.

Underneath the interface, Merlin routes your prompts across a catalogue of leading models from different vendors instead of locking you into a single provider. Alongside chat, it offers Projects for reusable knowledge bases, Crafts for turning prompts into diagrams and infographics, custom bots with your own instructions, and image generation across many model choices. History, prompts and bots sync across the extension, web app and mobile apps.

The company markets one subscription as a cheaper alternative to buying several model subscriptions separately, with a free tier and a paid Pro plan, and states GDPR, ISO 27001 and SOC 2 compliance. It is a strong fit for people who work mostly inside the browser and want model choice without managing many accounts.

**Pricing & Plans:** Freemium. A free tier covers everyday chats and core extension features; Merlin Pro is advertised at $19 per month billed annually (with periodic promotional pricing such as $2/month offers). Exact limits and current promotions change, so check the pricing page.

- **In-page browser assistant:** A Chrome extension that summarizes, searches and writes directly over the page you are on, without switching tabs.
- **Multiple frontier models:** Access to leading models from several vendors in one place, so you can pick the best fit for each task.
- **Projects and custom bots:** Build reusable knowledge bases from your own documents and code, then query them repeatedly for tailored answers.
- **Crafts visual output:** Turn a prompt into flowcharts, mindmaps, charts and other diagram types for reports and presentations.
- **Sync across devices:** Chat history, saved prompts and custom bots carry over between the Chrome extension, web app, iOS and Android.

**Strengths:** Works inside the browser, so everyday tasks need no tab switching; Several vendor models available under one subscription; Projects, bots and prompt libraries make repeat work efficient; Available in regions where some AI services are restricted

**Limitations:** Free tier is limited, and useful features sit behind Pro; Model availability and tool set change frequently, so behavior can shift; Browser-first design is less convenient for people who prefer a desktop chat client

[Profile (Markdown)](https://openaitools.app/tool/merlin-ai.md)

## Frequently Asked Questions

### How do DeckAssistant and Merlin AI compare in monthly traffic?

DeckAssistant has 173 monthly visits, while Merlin AI has 1,382,634. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

DeckAssistant has a month-over-month growth rate of -89.9%; Merlin AI has +13.1%.

### How does pricing compare?

DeckAssistant: Free Trial, Paid. Paid software purchased from the vendor, with a licence agreement and refund policy; discounts have been offered at checkout. See the official pricing page for current plans. Merlin AI: Freemium. Freemium. A free tier covers everyday chats and core extension features; Merlin Pro is advertised at $19 per month billed annually (with periodic promotional pricing such as $2/month offers). Exact limits and current promotions change, so check the pricing page.

## Alternatives

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [ChatGPT](https://openaitools.app/tool/chatgpt-4) | 6,048,022,723 | +2.2% | Freemium | OpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research. | [.md](https://openaitools.app/tool/chatgpt-4.md) |
| 2 | [Perplexity](https://openaitools.app/tool/perplexity-ai) | 88,310,223 | -3.7% | Freemium | Real-time AI answer engine and research workspace combining live web citations with frontier reasoning models. | [.md](https://openaitools.app/tool/perplexity-ai.md) |
| 3 | [Grammarly](https://openaitools.app/tool/grammarly) | 58,867,412 | -1.5% | Freemium | Cross-platform AI writing assistant delivering real-time grammar correction, tone alignment, authorship tracking, and team style guides. | [.md](https://openaitools.app/tool/grammarly.md) |
| 4 | [Poe](https://openaitools.app/tool/poe) | 5,894,702 | +9.1% | Freemium | One app to chat with GPT, Claude, Gemini and hundreds of other AI models | [.md](https://openaitools.app/tool/poe.md) |
| 5 | [Monica](https://openaitools.app/tool/monica-ai) | 4,512,775 | -11.3% | Freemium | All-in-one AI assistant across web, browser, desktop and mobile | [.md](https://openaitools.app/tool/monica-ai.md) |
| 6 | [Sider](https://openaitools.app/tool/sider) | 2,644,740 | -10.6% | Freemium | AI sidebar and browser agent for reading, writing and research | [.md](https://openaitools.app/tool/sider.md) |
| 7 | [1min.AI](https://openaitools.app/tool/1min-ai) | 676,691 | +7.8% | Freemium, Paid | One AI subscription for chat, images, audio, video and agents | [.md](https://openaitools.app/tool/1min-ai.md) |
| 8 | [Chatbox](https://openaitools.app/tool/chatbox) | 567,170 | -16.1% | Freemium | One privacy-first AI client for GPT, Claude, Gemini and more | [.md](https://openaitools.app/tool/chatbox.md) |
| 9 | [HARPA AI](https://openaitools.app/tool/harpa-ai) | 537,461 | +99.3% | Freemium | One browser agent that combines every major AI model with web automation | [.md](https://openaitools.app/tool/harpa-ai.md) |
| 10 | [Typing Mind](https://openaitools.app/tool/typing-mind) | 533,103 | +12.9% | Paid | The best frontend for AI. | [.md](https://openaitools.app/tool/typing-mind.md) |

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Source: https://openaitools.app/compare/deckassistant-vs-merlin-ai

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