DeepSeek FAQ

No. en.chat-deep.ai is an independent publication that explains how DeepSeek products and services work. DeepSeek does not operate or endorse this website. Use deepseek.com for official products, announcements, downloads, documentation, and account access.

The official English-language company website is www.deepseek.com/en/. The official browser-based chat is a separate service at chat.deepseek.com. Check the domain before entering account information, uploading a document, or creating an API key.

Open the official DeepSeek web chat or install the official mobile app. This website does not provide an embedded AI chat, and a message submitted through our contact form is sent to the publisher rather than to a DeepSeek model.

Use DeepSeek’s official download page for the iPhone and Android links. Our DeepSeek app guide explains how to verify the publisher and distinguish the mobile assistant from similarly named third-party apps.

DeepSeek offers DeepSeek Harness for supported Windows and macOS computers. Harness is a desktop product for working with files, repositories, plugins, and longer tasks; it is not simply the mobile chat app displayed in a desktop window. Use the official download page to check the current system requirements.

Follow the sign-in options displayed by the official chat, app, or developer platform. Account requirements can differ by service and region. You do not need an account to read articles on en.chat-deep.ai.

DeepSeek describes its official consumer assistant as free to use. That does not make every DeepSeek-related service free: direct API usage is billed separately, and independently operated apps or model providers can set their own prices.

No. Creating a developer account or API key does not make model calls free. Direct API usage is charged according to the model, input tokens, output tokens, cache usage, timing, and any separately billed Search or Fetch requests. An account may occasionally contain granted balance, but that should not be assumed.

DeepSeek publishes prices per 1 million tokens, with different rates for cached input, uncached input, and output. Rates also differ by model and between peak and off-peak periods. See our DeepSeek pricing guide for worked examples, then verify the current figures on the official pricing page.

Sign in to the official DeepSeek API Platform, open the API key area, and follow the current instructions to create a key. Store the key as a secret and never publish it in browser code, screenshots, public repositories, or support messages.

The current official model list includes deepseek-flash for DeepSeek V4.1 Flash and deepseek-v4-pro for DeepSeek V4 Pro. The older deepseek-chat and deepseek-reasoner model names were retired in 2026, so new integrations should follow the current model list rather than older tutorials.

DeepSeek’s October 17, 2026 change log states that the official web and app models were updated to DeepSeek-V4.1-Flash-1017. DeepSeek has also offered V4 Pro through its services. The exact model or mode available in your interface can change, so check the current label and official change log when the distinction matters.

Yes, DeepSeek provides web-search capabilities in supported official services, and its API includes separate Search and Fetch services. A normal model answer and a web-assisted answer are not the same: check whether search was actually enabled and open the cited sources before relying on a current claim.

Yes. The current deepseek-flash API model accepts image inputs and can describe images, read text from screenshots, and analyze charts. Image support in the consumer app depends on the controls available in its current version, so look for the attachment or vision option in the official interface.

DeepSeek has published Janus research models that include text-to-image generation. That does not mean image generation is available as a standard feature in every DeepSeek chat, app, or API model. Check the specific product and model instead of treating image understanding and image generation as the same capability.

The official mobile assistant has supported file upload and text extraction. Exact file types, size limits, and available tools can change between versions. Confirm that the current interface accepts your file, and check the answer against the original document rather than assuming the entire file was processed correctly.

Yes. DeepSeek models can explain code, suggest fixes, generate tests, and draft new code. Generated code can still contain errors or unsafe assumptions, so review it, run it in an appropriate test environment, and avoid exposing secrets or production credentials in a prompt.

Compatible open-weight DeepSeek models can be downloaded and run on hardware you control using suitable inference software. The required RAM, VRAM, storage, and setup depend on the model and quantization. Installing the official phone app or an APK does not make the hosted assistant run locally or work without an internet connection.

DeepSeek publishes open model weights, technical reports, and inference code for multiple model families. Check the license attached to the exact repository or model you plan to use. Open model weights are not the same thing as the hosted chat service, mobile app, or every component of DeepSeek’s infrastructure being open source.

There is no useful universal winner. Compare the specific models and products on your own tasks, including answer quality, required editing, tools, speed, privacy terms, availability, and total cost. A benchmark score or one successful prompt does not establish which service is best for every use case.

Safety depends on the service, the information you submit, and your organization’s rules. DeepSeek’s privacy policy states that its official services can collect prompts, uploaded files, photos, chat history, device information, and other usage data. Do not submit passwords, API keys, payment details, confidential business information, or sensitive personal data unless you are authorized and the service is appropriate for that material.

DeepSeek’s privacy policy says personal data and interactions may be used to improve and train its technology. The policy also describes a right to opt out of using personal data for model training or technology optimization, depending on applicable rights and the request process. Review the current policy and account settings before sharing information.

DeepSeek’s privacy policy states that it directly collects, processes, and stores personal data in the People’s Republic of China. The policy explains that data may also be processed outside the user’s country and describes additional terms for users in certain regions.

DeepSeek’s privacy policy says users can manage, copy, or delete chat history through available settings and can delete an account. Account deletion is described as irreversible. The options visible to you can depend on the service and version, so follow the current account settings or contact DeepSeek about a privacy request.

Yes. DeepSeek’s model disclosure warns that AI output can be incorrect, incomplete, or invented. Verify important dates, quotations, references, calculations, and code. Do not treat an AI response as medical, legal, financial, or other professional advice.

Check DeepSeek’s official status page to see whether chat, API, file upload, search, or another component has an active incident. If no incident is shown, identify whether the problem concerns your connection, sign-in, a file, a browser, an API key, account balance, or request format before trying unrelated fixes.

Use DeepSeek’s official Help Center. It contains sections for login issues, chat problems, API questions, top-ups, balances, invoices, leaked API keys, and account verification. en.chat-deep.ai cannot access a DeepSeek account, view billing records, change a password, or issue a refund.

Use the feedback option available in the official DeepSeek service or follow its Help Center instructions. If the error is in an article published on en.chat-deep.ai rather than in a model response, send the article address and the disputed detail through our contact page.

Email info@chat-deep.ai or use the contact form. Include the page address, the link text, and what happened. Do not send passwords, one-time codes, API keys, payment details, or another person’s private information. See our Security page for reporting guidance.