Ask your documents.
Get answers you
can verify.
Upload research papers and reports, then have a conversation with them. Querex retrieves the relevant passages and answers with page-level citations — grounded, streamed, and traceable. It's also home to a Humanizer, an AI Checker, Real-time web search, and a Paper Analyzer, all under one login.
Free to use · sign in with Google, GitHub, or email
Research Copilot, live preview
Growth was led by enterprise renewals, with average deal size rising 12% quarter-over-quarter across the segment.
Five tools. One account.
Querex started as a document copilot. It's now a small suite of research and writing tools, each free to use the moment you sign in.
The flagship tool
Research Copilot
The original Querex product, and still the most capable — upload, ask, and every answer streams back with a page citation you can check.
Open Research CopilotGrounded in your sources
Page-level citations
Real-time streaming
Multi-document synthesis
Humanizer
Sound human. Stay accurate.
Rewrite AI-sounding text so it reads naturally, with meaning and facts preserved. Built to make writing genuinely better, not to trick a detector — no invisible characters, no gimmicks, just better editing.
- Natural, direct rewrites — built for blog posts, social copy, and product writing
- Word-diff transparency — see exactly which words changed
- Streams live, token by token, no waiting for the full rewrite
Rewritten
Artificial intelligence systems have revolutionized numerous industries. They also deliver significant efficiency gains.
AI Checker
Decisive answers, not hedging.
Detect AI-generated text with sentence-level highlighting and a paragraph-by-paragraph breakdown — plus a free grammar and style pass bundled in. Every result carries an honest disclaimer, not false certainty.
- Sentence-level highlighting of the exact flagged text
- Advanced Scan — a paragraph-by-paragraph AI-probability breakdown
- Free Writing Feedback — grammar, spelling, and clarity issues
- States its own false-positive risk instead of overclaiming
Real-time AI
Current answers, always cited.
General chat grounded in live web search — every answer links back to a real, clickable source. Search results are treated strictly as data to cite, never as instructions to follow.
- Live web search on every question, not just training data
- Numbered, clickable citations for every claim
- Independent session history, separate from Research Copilot
- Search results can't hijack the model — they're data, not commands
Paper Analyzer
Formatting, actually measured.
Upload a research paper and pick a style guide — APA, MLA, or IEEE. Every check is computed directly from the PDF's real margins, spacing, font, and alignment, never guessed by a model looking at a description.
- Checks against APA, MLA, or IEEE — chosen before you upload
- Margins, line spacing, font, alignment, and page numbering
- Measured from real page geometry, not an LLM's best guess
- Every check shows the measured value next to what's expected
Stop guessing. Start verifying.
Ask your documents, rewrite AI-sounding text, detect AI content, search the live web, or check a paper's formatting — pick a tool and get your first result in under a minute.