Select the tasks you do most often first
It only does ordinary Chinese Q&A, and can be used directly on both sides; if you often organize PDF, Word, tables, and web pages into reports, try Kimi first; if you want simple chat, Internet search, and in-depth thinking portal, try DeepSeek first.
Kimi is more like a gradually unfolding document and Agent workbench, and DeepSeek is easier to start from the chat box.
This is not a permanent conclusion of the model's capabilities, but a difference in the current official product entry. Both companies will change models and features, and ultimately still have their own files to compare against.
Long documents: Don’t just look at how many can be uploaded
Kimi's current novice instructions put file processing, documents, forms, PPT, in-depth research and general Agent in the same product system, supporting the upload of PDF, Word, Excel, PPT, pictures, TXT and videos. Kimi Docs also emphasizes creating, modifying, and exporting Word or PDF from materials.
DeepSeek's official App description lists file upload and text extraction; its subsequent model announcements also continue to emphasize long context. But large contextual numbers do not mean that the tables, images, and footnotes of complex PDFs can all be understood correctly.
- Upload the same 30 to 50 pages of real material, don’t push your limit with a few hundred pages first.
- Ask three specific questions scattered at the beginning, middle, and end.
- It is required to list the location of the original text and deliberately add a question that is not in the material.
- Finally, have it output a document that can be modified further, checking titles, tables, and citations.
If the focus is to continue to create a formal document after reading, Kimi's current product path is more clear; if it is just to extract and ask questions from the document, DeepSeek is also worthy of the same question.
Internet search: see if the source can return to the original text
Kimi's official search guide explains that it can independently determine whether to search or manually enable the Internet, and supports direct access to public websites, financial report PDFs, papers, and pages containing charts. When the page is password-protected, crawled with restrictions, or loaded dynamically, the complete content may still not be read.
DeepSeek web and app also provide Internet search. Its official announcement divides search and in-depth thinking into optional entrances, suitable for daily queries and problems requiring multi-step reasoning.
When comparing, don't ask "What's the news today?" and just look at the length of the answer. Specify three official websites and a time frame, requiring separate listings of publication dates, links to the original text, and conflicting claims. Whoever can get you back to the original text faster is more suitable for the search task.
Daily Q&A: Look at smoothness and stability, not a single win or loss
Writing an email, explaining a concept, translating a paragraph, and making a plan usually do not require first studying the model parameters. First use each one for a week to see the response speed, quota, history, synchronization between mobile phone and computer, and whether your commonly used tone needs to be corrected repeatedly.
When encountering complex mathematics, code, or problems that require multi-step analysis, you can open the corresponding thinking mode; for ordinary problems, slower is not necessarily better. A short, clear, checkable answer is often more useful than demonstrating extensive reasoning.
How to choose
- If you want to continue to generate Word, PDF, tables or PPT for a large number of documents: try Kimi's document and agent portal first.
- Mainly chat, search, document text extraction and deep thinking: try DeepSeek first.
- Figures, tables and footnotes must be dealt with: spot check with real documents and don’t believe in the word “extra long”.
- The latest information must be obtained: open the original webpage cited on both sides to check the date.
- Involving undisclosed or personal information: Check the current privacy and account rules before uploading.
Free, fast, new models may change. Make the choice a task that repeats every week so that you don't have to re-align with every update.
official information
This article comes from the following official information, verified on August 17, 2026:
