Compare: Compose AI: AI-powered Writing Tool vs Merlin AI

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Metric	Compose AI: AI-powered Writing Tool	Merlin AI
User count	300,000	900,000
Average rating	4.06	4.79
Rating count	244	8,794
Last updated	2025-01-02	2026-07-06
Size	24.73 MB	4.11 MB
Version	2.1.1	8.0.13

Short description	Boost your writing speed with Compose AI. Generate, autocomplete, rephrase text and draft emails effortlessly using AI-powered tools.	Merlin AI: An all-in-one Chrome extension for researching, rewriting, summarizing, translating, and chatting with any webpage, video, or document.
Full summary	Compose AI is an AI-powered writing extension designed to accelerate your writing workflow. With features such as AI text generation by typing '//', autocomplete suggestions, and smart email drafting, it streamlines composing emails, documents, and chats across websites. Key capabilities include rephrasing sentences to adjust tone or length, replying to emails with professional one-click responses, and generating full-length messages from brief inputs. Compose AI provides a versatile, smart writing tool that enhances productivity and creativity by automating text generation and editing tasks seamlessly within your browser.	Merlin is a 26-in-1 AI extension that lives in your browser, enabling you to research, rewrite, summarize, translate, and chat with content on any website without leaving your tab. It unifies top AI models in a single sidebar experience and adds 80+ built-in utilities, including a code explainer, AI detector, and voice-to-text, across 128+ languages. Key features include a Unified Model Hub, Live Web & File Fusion, cross-platform login, and dedicated Projects, Crafts, Chat with Files, Reading & Writing Assistants, Translate, and Website Enhancements, all designed to streamline research, writing, coding, and data workflows directly in your browser.