SMF·QUILLBOT
Can a prompt replace QuillBot?
AI writing — paraphrasing + grammar
Exhibit tracking slip
Verdict
A paraphrase-and-grammar tool wrapping an LLM plus a local grammar engine is a one-sitting build — QuillBot's actual value is almost entirely wrapper polish (browser and Word extensions, saved history, purpose-built modes), not a capability that's hard to reproduce.
Exhibit A — The prompt
Received on30.07.2026Build a small local tool with one text box in, one output pane, and buttons for a few fixed modes: paraphrase, summarize, and a couple of tone rewrites (more formal, shorter). Paraphrase, summarize, and tone modes call an LLM API with a fixed instruction per mode and stream the response. Grammar checking runs through a local open-source grammar engine (LanguageTool, self-hosted) rather than the LLM — grammar is a solved problem and shouldn't cost API tokens. Show a word-level diff between input and output so a rewrite's changes are visible at a glance. Save every run (mode, input, output, timestamp) to a database with a history view you can copy back out of.
Do not build browser or word-processor extensions, or plagiarism/AI-detection features — those need real platform integration work and separate detection models respectively, and neither is what makes the core paraphrase-and-grammar loop useful. This lives in one tab, and that's the honest trade against a tool that's installed everywhere you type.Opening prefills the prompt — press enter to run it.
Exhibit B — What you lose
- B.1 browser and Word extensions that work inline where you're already writing
- B.2 dedicated plagiarism and AI-detection workflows
- B.3 years of UX polish on rewrite modes
- B.4 account sync across devices
Prior art
Exhibit C — Why people still pay: polish/extensions
People pay because it's already installed where they write, with purpose-built buttons for each mode — not because paraphrasing text is a hard problem to solve.
Questions
Can I import my QuillBot history?
No — QuillBot doesn't offer an export of your saved rewrite history, so past work stays there. Everything from this build forward is saved locally in your own database.
Will it work on my phone?
As a page with a text box, yes, technically — but there's no browser extension or Word integration, so on mobile specifically you'd be copying text in and out manually, which is a real downgrade.
What does it cost to run?
Hosting for the small server plus LLM API usage per paraphrase or summary call — grammar checking itself is free, since it runs on a local open-source engine with no API cost.
What's the one thing that doesn't survive the rebuild?
Being where you already write. QuillBot's extensions work inline in your browser or Word; this build is a separate tab you copy text into and out of, every time.
Related tools
Receipt