Answerthis
Answerthis · Writing · Productivity · Leaning
Answerthis is an AI research assistant built for people who need verified sources, not fast guesses. It searches across 300M+ papers, trials, and PDFs, checks each claim against the paper it came from, and drops anything it can't trace. You can ask a question or upload a draft, then move straight into writing, annotating, and collaborating without hopping between apps.
About Answerthis
What Is Answerthis
Answerthis is a research platform that combines literature search, citation verification, and manuscript drafting in one place. Instead of returning a plausible-sounding paragraph with shaky references, it reads the underlying papers and judges whether each one is genuinely relevant to your question. It's backed by Y Combinator and used by over a million researchers, according to the company.
The core problem it targets is trust. Generic chatbots invent references or mangle citation formats, which is fatal when you're writing a paper, a grant, or a regulatory submission. Answerthis takes the opposite stance. Each statement gets checked against its source before it reaches you, and unsourced claims get removed rather than filled in. That's the whole pitch. Nothing gets invented.
There's a catch worth knowing up front. What's the actual trade-off? The free tier caps you at 5 saved projects and limits how far the AI will push on harder review work. Fair enough. Systematic review, meta-analysis, and the trial mapping tools sit on the highest plan, so teams doing formal reviews end up paying for access. It's also web-only, so there's no offline or desktop version.
Getting Started
- Sign up at app.answerthis.io with an email address. No credit card is needed for the free plan.
- Ask a research question in plain language, or upload a draft you want evaluated and cited.
- Review the returned sources, then open each citation to confirm it matches the passage being quoted.
- Organize the papers you keep into a project library, and export to Zotero, Mendeley, or EndNote when you want them elsewhere.
- Draft or revise your manuscript in the built-in writer, then share the project with your team for annotation and comments.
Product Information
A quick look at Answerthis's pricing, supported platforms, and performance.
Best for
The users, tasks, and scenarios where this tool fits best.
Users
- Graduate students
- Academic labs
- Pharma and biotech teams
- Librarians and institutions
Tasks
- Literature reviews
- Citation checking
- Systematic reviews
- Meta-analysis
Scenarios
- Starting a new research project and mapping what's already been published before committing to a direction.
- Validating a draft's claims before submission, when a bad citation could sink the whole paper.
- Tracking a clinical or competitive field across trial registries as new phases report.
- Preparing regulator-facing evidence where every action needs to be logged and reproducible.
Key features
Verified citations
Answerthis checks each statement in an answer against the paper it came from, so what you cite is what the source actually says. If a claim can't be traced back to a real paper, the platform removes it instead of guessing. For anyone who's been burned by invented references, this is the feature that justifies the whole tool. Simple as that.
Search across 300M+ sources
A single query reaches papers, clinical trials, and PDFs, and each result is judged for relevance rather than dumped in a list. You can also connect PubMed, Embase, and Cochrane in one AI literature search, or bring your own library. That breadth is what makes it useful for reviews that span disciplines. No hoops.
AI writer and manuscript drafting
The built-in writer handles full manuscript drafting, with frontier models and no rate caps on paid plans. You write, annotate sources, and revise in the same workspace, so nothing gets lost in exports between tools. It's aimed at people who'd otherwise juggle ten apps to finish one paper. Fewer tabs, fewer headaches.
Systematic review pipeline
The agent-led review covers the full method: research question and PICO framework, eligibility screening, data extraction, risk-of-bias assessment, and evidence synthesis. PRISMA diagrams, dual or AI reviewers, and living reviews are built in. Every step is logged and exportable for regulators or reviewers.
Meta-analysis and synthesis
Pool outcomes with fixed or random-effects models, run network meta-analysis with SUCRA rankings, and grade certainty with GRADE. Forest and funnel plots are included. Each estimate links back to the studies and passages behind it, which is the part most tools gloss over. Nothing is hand-waved.
Reference manager sync
Two-way sync with Zotero, Mendeley, and EndNote means your existing library stays in step. You can also analyze straight from the upload button without importing anything first. No exports needed. Practically, that removes the copy-paste step that usually breaks citation formats.
Data privacy controls
Your papers and drafts are never used to train any model, ours or anyone else's, and the company states this is guaranteed contractually on enterprise plans. Data is encrypted and isolated, with single-tenant deployment available. For labs handling unpublished or sensitive work, that matters more than most feature lists. Good call.
Pros and cons
Pros
- Citation verification checks each claim against its source, which cuts down on the fabricated references common in AI research tools.
- Search covers 300M+ sources including papers, trials, and PDFs in one query.
- Free plan needs no card and still includes deep search, cited answers, and exports to reference managers.
- Systematic review and meta-analysis features live in the same platform as drafting, so the workflow doesn't split across apps.
- Two-way sync with Zotero, Mendeley, and EndNote fits existing research habits.
Cons
- The free plan caps you at 5 saved projects and withholds systematic review, meta-analysis, and the trial mapping tools, so serious review work needs a paid seat.
- Pricing jumps fast: Pro runs $35 per seat monthly, while Lab & Team requires a minimum of 3 seats at $75 each billed annually.
- It's web-only, so there's no desktop app or offline mode if you work without a steady connection.
- No public API is documented, which limits teams that want to wire the tool into their own pipeline.
Frequently asked questions
It's an AI research assistant for finding, verifying, and citing academic sources. You ask a question or upload a draft, and it searches 300M+ papers and trials, returns cited answers, and helps you write literature reviews without invented references.
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