Summarize long articles, emails, and documents into short, medium, or detailed summaries using your own AI API key.
Use your own API key to get started.
No AI provider key configured
Click "Use Your API Key" above and add a Gemini, OpenAI, Anthropic, Z.AI, Kimi, MiniMax, or DeepSeek key. The key is stored in your browser only (sessionStorage) and sent directly to the provider you pick. See the BYOK tools page for how bring-your-own-key works and where to get each key.
Plain-language summaries. No markdown, no commentary.
Long articles, meeting notes, email threads, and research reports all share the same problem: you need the gist, not the word count. This tool sends your text to a large language model and gets back a summary at the length you choose, from a two-sentence brief to a detailed point-by-point digest. Because the model reads the entire input rather than skimming the first paragraph the way older extractive summarizers did, the summary reflects the whole document.
This is a bring-your-own-key (BYOK) tool. It calls the AI provider you select using the API key you add via the "Use Your API Key" button, and Kit Utility never sees or stores that key on a server. Your text travels from your browser through our lightweight proxy to the provider and back; nothing is retained after the request finishes. That means the tool costs nothing beyond what your provider already charges per request, typically a fraction of a cent for a summary. If a provider fails or returns an error, switch to another configured provider and try again.
Summaries are generated content and can occasionally miss nuance or compress ambiguity, so treat them as a reading aid rather than a replacement for the source when accuracy is critical. For related jobs, rewrite text in a different tone with the AI Paraphraser, clean up errors with the AI Grammar Fixer, or pull text out of screenshots and scans with OCR and Translation.
Yes. This is a bring-your-own-key tool: it calls the AI provider you choose with the API key you add via "Use Your API Key". Keys from Gemini, OpenAI, Anthropic, Z.AI, Kimi, MiniMax, and DeepSeek all work. Without a key the tool shows setup instructions instead of a summarize button.
Your text and key go from your browser through the Kit Utility proxy to the provider you selected, purely to reach the provider API from the browser. The key itself is stored only in your browser sessionStorage and is never saved server-side, and nothing is retained after the response returns.
Up to 50,000 characters, roughly 8,000 to 12,000 words. That covers most articles, newsletters, and reports in a single request. For book-length material, split it into chapters and summarize each part, then summarize the combined summaries.
Short gives you 2 to 3 sentences for a quick gist. Medium produces a single paragraph of about 120 words. Detailed writes roughly 300 words and walks through all major points, which suits dense material like research summaries or meeting notes.
Summaries compress, and models weight information differently. Try the detailed length, or split very long inputs into sections and summarize them separately. You can also switch providers, since each model tends to emphasize slightly different things.