Thanis is a feedback-first AI writing platform. It reads writing you have already produced and returns structured feedback across clarity, structure, mechanics, and either risk or evidence — helping you revise your own work without replacing your voice.

Is Thanis an AI writing generator?

No. Thanis does not generate essays, paragraphs, or sentences. It evaluates drafts you have already written and gives you structured feedback so you can revise the work yourself.

How is Thanis different from ChatGPT?

ChatGPT generates new text from a prompt. Thanis reviews text you have already written and gives you structured feedback on clarity, structure, reasoning, and evidence. One creates content; the other improves content you already wrote.

How is Thanis different from Grammarly?

Grammarly works at the sentence level — grammar, spelling, tone — and can rewrite text for you. Thanis works at the draft level — argument, structure, clarity, pacing — and never rewrites your text. You stay in control of every word.

What is feedback-first AI writing?

Feedback-first AI writing is a category where the AI evaluates a writer's existing draft rather than generating a new one. Thanis is designed as a feedback-first platform: it reads what you wrote, tells you what is working and what is not, and hands the revision back to you.

Thanis is built for writers, students, academics, professionals, and executives who want feedback on their own writing. Thanis Academic supports students and academic writers. Thanis Writer Pro supports authors, editors, and creators. Thanis Executive supports leaders reviewing high-stakes communication.

Web · iPhone · Android

Write like yourself —
with proof behind every edit.

Thanis reviews your draft and gives you clear editorial feedback, without rewriting or replacing your voice.

Free to try · No training on your work

Thanis Studio — the review beside the paper: Summary write-up and Clarity, Structure, Mechanics, Evidence scores.

Web

iPhone

Android

Try it now · Sample analysis

Paste. Analyze. Review. Improve.

Walk the Thanis workflow with a pre-baked sample analysis of Frost’s “Fire and Ice.” Illustrative preview only — Start Thanis Free to review your own writing.

Sample analysis · illustrated interactive preview

Live Editor51 / 300 Words

Clarity

Structure

Mechanics

Evidence

Summary

Click Analyze → to see how Thanis reviews the sample draft.

The public demo runs on a sample analysis. Start Thanis Free to review your own drafts.

Start Thanis Free

The review

Know where your draft stands.

The actual review, as it renders on your phone.

Draft Readiness
A single readable score answering whether the writing is ready for its intended audience.
The One Thing to Fix Next
Thanis surfaces the highest-impact issue first, so you know where to start.
Reasoning
See why each score changed.
Category Scores
Clarity, Structure, Mechanics, and a fourth score for your writing type. See each score at a glance.

Thanis on iPhone — Score Breakdown by category with Clarity, Structure, Mechanics, and Risk.

How Thanis works

One draft. One review.
Clear next steps.

Bring your writing

Paste, type, speak, or upload what you're working on.

Thanis reviews it

Your draft is evaluated for the selected mode — strengths, weaknesses, and opportunities.

You decide what to change

See the most important revision, understand why it matters, and improve the writing yourself.

Why Thanis is different

AI writers generate.
Thanis reviews.

Different job. Different product.

The writer

Generative AI

Writes for you
Generates new content
Can introduce generic language
Optimizes for producing an answer

The reviewer

Thanis

Reviews your work
Strengthens your ideas
Preserves your voice
Explains why something should change
Leaves the final decision with you

One product, everywhere

One Thanis.
Everywhere you write.

Start on the web. Continue on mobile. Your drafts follow you across supported devices.

iPhone

Review anywhere.

Thanis Studio on the web — Draft Readiness with Clarity, Structure, Mechanics, and Evidence.

Web

The full Thanis surface.

Android

Same drafts. Same review.

Your Thanis account and documents sync across every supported client.

Outcome

Better feedback should save time, too.

Thanis helps you get to the right revision faster — with fewer unnecessary passes.

Find the issue sooner.

Thanis points to the highest-impact problem instead of giving you a wall of edits.

Cut unnecessary revision loops.

Catch weak structure, unclear reasoning, and evidence gaps before they come back from someone else.

Spend more time improving and less time guessing.

Know what deserves another pass and why.

What Thanis stands for

Your writing stays yours.

Thanis helps you improve the work without replacing your words or your judgment.

You remain the author.

Thanis reviews. You revise. Your name is on the finished writing because your voice is.

We don't train on your work.

Your drafts, notes, and revisions are never used to train, fine-tune, or improve AI models. Ever.

Recommendations, not rewrites.

Every observation is a suggestion. You decide what to accept, adjust, or ignore.

Everything above is a promise we've written down.

Privacy AI & Data Policy Trust Center

Who Thanis is for

Who is Thanis built for?

Students checking a paper. Writers refining a draft. Leaders preparing a message that has to hold up.

Students & Academic Writers

Submit with confidence. Know your paper is ready.

Check evidence and unsupported claims
See where structure or reasoning breaks down
Review your draft without having AI rewrite it

Explore Academic

Writers & Creators

Get enough distance from your draft to see what you’ve stopped noticing.

Review structure, pacing, and tone
See where the writing loses momentum
Revise without handing over your voice

Explore Writer Pro

Leaders & Executives

Pressure-test the message before the room does.

Challenge assumptions
Test recommendation strength
Surface weak reasoning and ownership gaps

Explore Executive

Plans

Choose the review that fits your work.

Deeper feedback, more history, and higher limits when you want them.

Basic

$0.00/mo

A simple way to get useful feedback

Analysis

10 analyses each month
Up to 5,000 words per analysis
See where your writing is clear and where it gets harder to follow
Know where to focus your next revision

Access

Creative Mode
Upgrade to unlock full review history

Start Free

Academic

$9.99/mo

Built for papers and assignments

Analysis

30 analyses each month
Up to 15,000 words per analysis
Uses your rubric or assignment requirements to focus the feedback
Shows where your argument, evidence, organization, or clarity need work
Helps you decide what to revise without rewriting your work

Review

Clear feedback tied to specific places in your draft
Full review history

Choose Academic Explore Thanis for Students →

Writer Pro

$14.99/month

For writers with more to say

Analysis

75 analyses each month
Up to 15,000 words per analysis
Shows where clarity, structure, or style get in the way
Spots patterns that interrupt flow or make your writing harder to follow
Helps you decide what to revise while keeping your voice intact

Review

Detailed feedback across your entire draft
Full review history

Choose Writer Pro Explore Thanis for Writers →

Executive

$24.99/month

For leaders who need clear, effective communication

Analysis

100 analyses each month
Up to 15,000 words per analysis
Shows where your message could be clearer, stronger, or easier to act on
Surfaces assumptions or logic gaps that could weaken your message
Helps you focus revisions on what matters most to your audience

Review

Critical Assumption analysis
Full review history

Choose Executive Explore Executive Thanis →

PLAN LIMITS

Compare plan limits

Compare analysis, document, storage, upload, and monthly review allowances across Thanis plans.

Analysis, document, storage, upload, and monthly review allowances for Basic, Academic, Writer Pro, and Executive plans
Limit	Basic	Academic	Writer Pro	Executive
Maximum words per analysis	5,000	15,000	15,000	15,000
Maximum words per saved document	10,000	50,000	100,000	50,000
Saved documents	10	100	250	250
Total storage	25 MB	500 MB	1 GB	1 GB
Maximum individual Word/PDF upload	5 MB	15 MB	20 MB	20 MB
Successful analyses per month	10	30	75	100

Monthly allowances count successful new analyses. Opening an existing result does not use another analysis. Review History access is listed on each plan card.

Academic, Writer Pro, and Executive can analyze documents up to 15,000 words in a single review. Thanis automatically handles larger documents for you.