How long an article can I summarize?
Up to 12,000 characters in a single pass - roughly 2,000 words or a long-form article. For longer content, summarize the article section-by-section. The model preserves numbers, proper nouns, and stated figures exactly, so splitting a longer piece does not lose accuracy.
Will the summary invent facts that are not in my article?
No. The system prompt explicitly forbids adding information that is not in the source. The summary is extractive in spirit - it pulls and condenses what is actually in your text rather than generating new claims. If a fact appears in the summary, it came from your article.
What is the difference between paragraph, bullets, and key points?
Paragraph is flowing prose, best for adding a TL;DR above your article or sharing in chat. Bullets are a clean scannable list, best for email and internal notes. Numbered key points are 5-8 one-sentence takeaways - best as an 'at a glance' block at the top of a blog post or as a social thread starter.
Can I use this for research papers, PDFs, or transcripts?
Yes, paste the text content in. For PDFs, use a free PDF-to-text extractor first (macOS Preview, Adobe Reader, or pdftotext). For video transcripts, paste the transcript text. The summarizer does not process files directly - only text - which keeps it fast and private.
Is the output original enough to publish?
The summary is a condensed version of your source article, so treat it like any derivative work - it is fine to publish as a TL;DR, abstract, or social post summarizing your own article. Do not use it to summarize someone else's article and pass it off as original content.