SUX1 is the tool for people who read a lot: courses, theses, scientific papers, whole chapters, entire Gutenberg books. Where ChatGPT asks you to split the text, open a chat, re-prompt — SUX1 swallows a full book in one click. €2 for life. No subscription.
Our digital lives drown us in text: articles, reports, contracts, emails, meeting transcripts, 12-paragraph LinkedIn posts. Reading time hasn't kept up.
General-purpose AIs (ChatGPT, Claude, Gemini) are amazing — but overkill for one simple task: 'summarize this'. SUX1 removes that friction.
SUX1 is built for one use case: summarizing. Paste text (or upload a PDF, DOCX, or paste an article URL), pick your options, click Summarize. That's it.
Yes, ChatGPT can summarise a short text. No, it cannot do what SUX1 does. Honest comparison:
| Feature | Free ChatGPT | SUX1 · €2 lifetime |
|---|---|---|
| Max input length | ≈ 8 000 words (32k tokens) — silently truncates beyond | Whole book · up to 300 000 chars via auto map-reduce |
| 200-page thesis PDF | No — you must copy-paste chapter by chapter | Drop the file · full streaming summary |
| EPUB / Project Gutenberg | Not supported | Native import · global or chapter mode |
| Web article (URL) | No — you paste the text manually | Paste the URL · Trafilatura extracts clean content |
| Book cover photo | No | Snap the cover · full reading sheet |
| Chapter-by-chapter summary | No — single output blob | Accordion · up to 40 detected chapters |
| Searchable persistent history | Last 3 chats in a mess | Dedicated history · search, sort, tags |
| Public sharing (Open Graph link) | No | Every summary becomes a shareable public page |
| Offline voice reading | No | Listen button · native FR/EN voices, free |
| 3 AIs to choose per summary | You're locked on one model | Claude Sonnet 4.5 · GPT-5.2 · Gemini 3 Flash in one click |
| "Explain & Solve" format | Re-write the prompt every time | Dedicated button · perfect for exercises & exams |
| Price | €0 · but hidden caps + ads for Plus ($20/month) | €2 once · unlimited forever · no subscription |
| Privacy | Your texts may train OpenAI models | Your texts are never used to train any AI |
In short: ChatGPT is a swiss-army knife. SUX1 is a swiss razor. If summarising is your daily job — student cramming for an exam, researcher digesting 30 papers a week, teacher prepping a class — one wastes your time, the other saves it.
SUX1 started as a plain "paste your text" field. Today it handles an entire book in streaming, a cover-photo scan, a Wikipedia URL, a PDF contract or a YouTube transcript — with the same one-click simplicity.
SUX1 keeps evolving. Here are the major improvements shipped in the last few weeks.
"Listen" button next to every summary — global, chapter, or archive detail. Uses the browser's native speech synthesis: free, offline, high-quality French and English voices on iOS, macOS, Chrome and Android. Play / Pause / Stop, auto language detection, auto-cancel on navigation.
Two-phase pipeline: 16 sections digested in parallel by Gemini Flash, then a final synthesis by your model of choice. Text types itself token by token in the UI. If the connection is cut, the partial summary is preserved.
Auto-detects up to 40 chapters. Each chapter streams progressively into an accordion. Live progress bar. Per-chapter timeout prevents any hang.
Snap a book's cover: Claude Vision identifies title and author, then SUX1 produces a full reading sheet — without storing the image.
BeautifulSoup replaced with Trafilatura: no more ads, no more menus, just content. Native support for public Google Docs redirects.
One-click installable on iOS and Android. Native CSS splash screen. Tap feedback on every interaction. API 36-compliant AAB uploaded to Google Play Console.
Web Share API for native sharing, optimised PDF printing, polished dark theme, and a new "Philo" format: central idea + philosophical perspective + author quotes.
If you find the tool useful, the best gift is telling others.