- DeepSeek is a free, open-source, feature-rich AI focused on mathematics and programming.
- It allows use in Spanish and has applications both on web and mobile, as well as local installation.
- It stands out for its low cost, subscription-free access, and suitability for developers and general users.
Artificial intelligence has been changing at a breakneck pace, and in recent months one name has begun to stand out on the international scene: DeepSeek. With an open-source approach, free use, and an impressive price-performance ratio , this Chinese-developed AI has become a real alternative to established rivals like ChatGPT, Gemini, and Copilot. But what exactly is DeepSeek, how do you use it, what options does it offer, and what should you consider before trying it out?
If you're considering making the leap to this new generation of smart assistants, here's a practical and comprehensive guide on how to use DeepSeek in Spanish , its latest models, limitations, privacy aspects, and all the possibilities it offers. We'll cover absolutely everything relevant so you can take full advantage of every feature of this powerful tool.
What is DeepSeek and why is it so relevant?
DeepSeek is a Chinese company specializing in artificial intelligence and is also the name of its AI chat , an open-source, advanced language model. DeepSeek's rise has generated considerable buzz in both the tech media and the user community for very specific reasons: its standard version is free, it allows local use, and it's transparent by open-source , which is the complete opposite of most commercial American AI programs.
The system is designed to assist in software development, natural language processing, automation tasks, and even solving complex mathematical problems . Furthermore, it can be used in Spanish and other languages, making it an affordable and accessible option for users worldwide.
Two aspects stand out in particular: being open source under the MIT license (ideal for developers and researchers looking to modify and adapt AI), and ease of use both on the web and through Android and iOS mobile applications , as well as the alternative of installing the model locally – although this requires technical knowledge.
Available AI models and technical advances
DeepSeek has climbed the ranks in the industry thanks to its two main models: DeepSeek V3 and DeepSeek R1 . The former is a great general-purpose language model, while the latter, R1 , focuses on logic, mathematics, and programming.
One of the most striking points is that DeepSeek R1 has outperformed models such as ChatGPT (in its GPT-4o version) and Llama 3.1 in key academic tests , especially in contexts that require advanced mathematical reasoning (for example, in the MATH-500 test, with more than 97% success rate, while OpenAI was close to 96%).
Equally important is the cost: developing R1 required a significantly lower investment than its competitors , only around $5,5 million according to specialized sources, compared to the more than $80 million that similar models cost in the United States. They have also surprised everyone with their low cost of use: the price per million tokens processed by DeepSeek is seventeen times lower than the equivalent from OpenAI.
How to start using DeepSeek on web, mobile, and local
DeepSeek is easy and flexible to access and use, allowing you to choose between several platforms:
- Web version: You can use DeepSeek directly on its official website (chat.deepseek.com). Simply log in and click the "Start Now" button.
- Mobile App: DeepSeek is available as an app for both Android (Google Play Store) and iPhone (App Store). The experience is nearly identical, adapted to your device's screen.
- Local installation: If you have advanced knowledge and are looking for maximum privacy, you can download the template and install it locally on your computer. Note: this works in Windows Terminal mode or via commands, and requires technical resources and powerful hardware.
Whichever method you choose, the registration process requires creating an account associated with your email or Google account, as well as accepting the terms and privacy policy.
Language settings and usage in Spanish
One of the biggest questions for any Spanish-speaking user is whether DeepSeek can be used in Spanish . The answer is yes: you just have to start the conversation by typing in Spanish , and the model will automatically continue responding in that language.
In some cases, especially if the question is confusing or mixes languages, the AI might respond in English. If this happens, include "Answer in Spanish" at the end of your question to avoid confusion . You can also start the conversation by explicitly asking "speak to me in Spanish."
By default, the interface remains in English, but this does not affect comprehension or responses. The reasoning sequences that the AI processes while generating responses will still appear in English, but the replies will be delivered in the user's chosen language.
Cost of use: Is it really free?
One of the key advantages over other leading AI tools like ChatGPT is that DeepSeek doesn't charge individual users for its most advanced model (R1) . The pricing plan displayed on the website is exclusively for businesses, developers, or services that want to integrate the DeepSeek API into other platforms . For standard users, access to text and core functionalities is completely free.
This disruptive approach has been key to DeepSeek's popularity, which has quickly surpassed ChatGPT in downloads on both the App Store and the Google Play Store in countries like Spain and the United States.
What exactly can you do with DeepSeek?
DeepSeek is much more than just a chatbot. Here's a summary of its main features:
- Answers to questions about general knowledge, popular topics, and trends.
- Clear and concise explanation of complex concepts (You can always ask them to expand or simplify according to your needs).
- Advanced support for mathematics and technical problem-solving, with special skill in mathematical exercises, logical analysis and reasoning.
- It helps with programming and debugging code., for both simple code and complex software tasks.
- Document analysis: sends files (documents or images) and asks DeepSeek to extract the most relevant information or answer questions associated with the content.
- Idea generation, text editing, and creative content creation, such as articles, poems, or blog structures.
- Query real-time information using the “Search” button, which allows the AI to search the Internet for the most up-to-date sources before responding.
Compared to ChatGPT and other advanced AI tools, DeepSeek doesn't yet allow image generation or voice interaction . You also can't customize the model in the same way as OpenAI's custom GPTs, nor does it have a "Canvas" system for visually organizing ideas.
General interface and extra features
Using DeepSeek on a daily basis is very intuitive. You'll find a text field for writing questions and a sidebar where your session history is stored . Answers are displayed quickly, and you can copy them, rate them positively or negatively, and even regenerate them to get different alternatives.
One of its distinguishing features is the DeepThink (R1) button : when activated, the AI uses its advanced reasoning model, taking a few extra seconds to analyze in depth and provide much more detailed and well-reasoned answers than with the V3 model. This mode is especially useful for academic questions, complex programming, or technical discussions.
Along with DeepThink, the Search button allows answers to be based on real online sources , ideal for current events or questions requiring up-to-the-minute information. Both buttons are clearly visible next to the text area where you enter your questions.
At the bottom of each result you can also rate the answer and reload it so that DeepSeek generates a new answer based on the same prompt.
Privacy and aspects to take into account
Like any online platform, DeepSeek collects certain personal data to optimize its services . When you register, you will be asked for your email address, IP address, and, on mobile devices, it may record clicks or taps. This information is used, according to the privacy policy, to improve the user experience and may be shared with partners such as Google or Apple.
For those who value privacy above all else, the option to download and install DeepSeek locally eliminates the need to send data to external servers . This way, all processing happens on your own computer, and the information remains local. However, for most users, the web or app option will be more convenient, even while acknowledging the processing of certain data.
Limitations and censorship: values and geopolitical context
A key factor in understanding DeepSeek is that, while its AI is powerful and open-source, the online version is subject to China's political regulations . This means it will not answer questions on topics sensitive to the Chinese government (such as the Tiananmen Square massacre or the Taiwan issue) . In such cases, it will simply suggest the user change the subject or offer no response.
Important: This censorship only applies to the online chatbot . If you use DeepSeek installed on your own computer, you will not have these restrictions, and the AI will not align its responses with the political values of the country of origin.
Comparison with other AI assistants
DeepSeek has been repeatedly compared to other leading assistants such as ChatGPT, Gemini, and Copilot. While it still lags behind in certain functions (image generation, voice, advanced customization), it rivals the best Western models in mathematics, reasoning, and text processing , and it does so at no cost to the individual user.
However, the interface is still being developed and some advanced features will arrive in the future, such as the creation of your own images (there is already a generator in testing called Janus Pro).
