DeepSeek works in English, but two different settings are often confused: the language of the buttons and menus, and the language used in the answer. Changing the interface to English makes the product easier to navigate; it does not guarantee that every reply will remain in English. For reliable English output, state the language and format you want in the prompt.
This guide shows how to change DeepSeek to English on the web, iPhone, and Android, what to do when DeepSeek replies in Chinese, and what happened in our five-scenario web test. The current hands-on evidence is from the official web chat in Instant mode on July 29, 2026. We did not test Search, DeepThink/Expert mode, or the mobile apps for this review.
Quick answer: how to use DeepSeek in English
- Open the official DeepSeek English website or go directly to chat.deepseek.com.
- Set the interface language to English when that control is available.
- Start a new chat and write: “Answer in English only. Keep all headings, explanations, and examples in English.”
- Add an exact output rule when format matters, such as “Return exactly three bullet points with no introduction.”
- If Chinese appears, ask DeepSeek to regenerate the answer in English. Start a new chat if the language continues to drift.
The important distinction: interface language changes navigation labels; prompt language controls the requested output. Use both for the clearest English experience.
How to change DeepSeek to English on the web
Use the official domains, especially when signing in. DeepSeek’s corporate site has a dedicated English version, while the chat service is hosted separately.
- Visit deepseek.com/en. If the Chinese homepage opens, select English or open the English URL directly.
- Select Start Now to open the official chat, or enter chat.deepseek.com in the address bar.
- Sign in if prompted. Check that the address still ends in deepseek.com before entering account details.
- If the chat interface is not in English, open its settings and choose English when the language selector is shown. A System option may instead follow your browser or operating-system language.
- Open a new conversation and include an English-only instruction in your first message.
Menu names can change as the web product is updated. If you cannot find a language selector, set English as your browser’s preferred language, reload the page, and use the direct English homepage. This changes what you see in the interface; keep the prompt instruction as a separate step.
How to set DeepSeek to English on iPhone and Android
DeepSeek publishes official apps for iOS and Android. Download them only through the links provided by DeepSeek or the verified app-store listing; the company’s official app announcement warns users to use official channels.
In the app, open Settings and choose English if a language option appears. If your version follows the device language, set DeepSeek’s per-app language to English in iOS or Android settings when your operating system offers that control; otherwise change the device’s preferred language and reopen the app. Labels and availability can differ by app and operating-system version.
We have not repeated our five-scenario test on iPhone or Android, so the scores below apply only to the web chat. The same English-only prompt is still a sensible first troubleshooting step on mobile.
How to stop DeepSeek replying in Chinese
Do not rely on a vague request such as “speak English.” Give DeepSeek a persistent language rule and, when needed, a separate format rule. Put both at the beginning of a new conversation:
Use English for every final answer in this conversation, even when my message or source text is in another language. Translate non-English source material as needed. Do not add a preface. Follow the requested format exactly.
Then add the task. For example: “Explain photosynthesis in exactly three bullet points.” Separating the language rule from the task makes the requirement easier to evaluate. If you are supplying Chinese text for translation, say which text is the source and which language the final answer must use.
If the reply is already in Chinese
- Reply: “Regenerate the complete answer in English only. Preserve the facts and requested format.”
- If that fails, start a new chat so earlier Chinese context does not continue to influence the conversation.
- Repeat the English-only rule after a long conversation or before a message written mainly in another language.
- Check language and formatting separately. An answer can be fully English while still breaking a “no introduction” or “exactly three bullets” instruction.
Our DeepSeek English test: method and limits
On July 29, 2026, the Chat-Deep.ai Editorial Team ran five practical language scenarios at chat.deepseek.com. We used the web interface in Instant mode and reviewed the final answer for two things: whether it stayed in English and whether it followed the requested structure.
The scenarios covered a science answer constrained to three bullets, a mixed English-and-Arabic prompt, translation from a Chinese source, US-English grammar correction, and a persistent English instruction followed by an Arabic message. This was a small observational check, not a benchmark. Results can change with the prompt, conversation history, model update, account, region, or product mode.
Test results: English 5/5, strict format 4/5
| Scenario | English final answer | Required format | Observation |
|---|---|---|---|
| Science answer in three bullets | Pass | Pass | The final answer stayed in English and used the requested three-bullet structure. |
| Mixed English + Arabic prompt | Pass | Pass | The final answer followed the requested English output language. |
| Translation from Chinese source text | Pass | Pass | The source language did not prevent an English final answer. |
| US-English grammar correction | Pass | Pass | The corrected output remained in the requested English variant. |
| Persistent English rule, then Arabic follow-up | Pass | Fail | The answer was English, but DeepSeek added a short introduction, breaking the strict no-preface format. |
What this result means: DeepSeek produced an English final answer in all five scenarios, including when the prompt or source contained Arabic or Chinese. It followed the strict output format in four. The fifth response shows why “English only” and “follow this exact format” should be treated as separate requirements.
The test does not prove a universal 100% success rate. It is a transparent record of five observed responses in one mode on one date. We did not test Search, DeepThink/Expert mode, the API, iPhone, or Android, and we do not extend the 5/5 result to those products or modes.
A fast troubleshooting checklist
- Menus are Chinese: use the direct English homepage, select English in settings when available, or make English the browser/app language.
- Only the answer is Chinese: keep the interface setting, but add an explicit English-only instruction to the prompt.
- Mixed-language answer: ask for a complete regeneration in English, not a summary or partial translation.
- English but wrong structure: state a measurable rule—number of bullets, maximum length, headings, and whether introductions are allowed.
- Language keeps drifting: open a new chat and place the persistent language rule in the first message.
- The site or app will not load: check the official DeepSeek status page before changing settings or reinstalling.
Three English prompt templates
General use: “Answer in clear English only. Keep technical terms in English and do not include Chinese text.”
Translation: “Translate the Chinese source below into natural US English. Return only the translation and preserve names, numbers, and meaning.”
Strict format: “Answer in English only using exactly five bullet points. Each bullet must be one sentence. Do not add a title, introduction, or conclusion.”
Privacy, availability, and the official website
Changing the language does not change how the hosted service processes your prompts. DeepSeek’s current privacy policy says user input may include prompts, uploaded files, photos, feedback, and chat history. Avoid entering confidential, regulated, or sensitive personal data unless your organization has reviewed the service and its policies.
Features and access may vary by region, app version, and service status. For verified login, app, API, pricing, and status destinations, use our DeepSeek official website and safety guide. Chat-Deep.ai is an independent reference site and is not DeepSeek’s operator.
Frequently asked questions
Does DeepSeek support English?
Yes. DeepSeek provides an English website and can generate English answers. In our five-scenario web test in Instant mode, every final answer was in English. That small test is observational and should not be treated as a guarantee for every prompt, mode, or future model version.
Why is DeepSeek answering in Chinese when my interface is English?
The interface language and output language are separate. Conversation history, mixed-language prompts, or non-English source material can affect the reply. Add an explicit English-only instruction, request regeneration, and start a fresh chat if the problem continues.
How do I make DeepSeek always reply in English?
Place a persistent instruction in the first message: “Use English for every final answer in this conversation, even if I write in another language.” Repeat it when the conversation becomes long. No prompt can guarantee permanent compliance, so review the output.
Can I use DeepSeek in English on iPhone and Android?
Yes. DeepSeek offers official iOS and Android apps. Choose English in the app when the option is present, or use the operating system’s app-language setting. Our reported 5/5 English result is from the web interface, not a mobile test.
What is the official DeepSeek English website?
The official English homepage is deepseek.com/en, and the official web chat is chat.deepseek.com. Check the domain carefully before signing in or downloading an app.
Official sources
- DeepSeek English homepage
- DeepSeek official web chat
- DeepSeek official app announcement
- DeepSeek service status
- DeepSeek privacy policy
Tested and reviewed by the Chat-Deep.ai Editorial Team. Read our editorial policy for how we test, source, and update guides.