DeepSeek

DeepSeek

DeepSeek Neural Network Description

DeepSeek is a family of open-source large language models developed by the Chinese company DeepSeek AI. It includes general-purpose versions (DeepSeek-V3, DeepSeek-V4) as well as specialized models for reasoning (DeepSeek-R1), programming (DeepSeek-Coder), mathematics (DeepSeek-Math), and multimodal tasks (DeepSeek-VL2). The models support a context window of up to 1 million tokens and are available for free through a web interface and mobile apps, as well as through a paid API for integration into third-party projects. The tool works with Russian, can analyze uploaded files, and solve complex logical tasks.

Model Family

DeepSeek offers a wide range of models for different purposes: the flagship DeepSeek-V3 and DeepSeek-V4 for general tasks, specialized DeepSeek-R1 for chain-of-thought reasoning, DeepSeek-Coder for programming, DeepSeek-Math for mathematical calculations, and multimodal DeepSeek-VL2 for working with images. Distilled versions based on Llama and Qwen architectures are also available.

Open Source

Most DeepSeek models are distributed under the MIT license or the DeepSeek license, allowing developers to freely use, modify, and improve them. Model weights are published on Hugging Face, and the code is available on GitHub.

DeepSeek Characteristics

Characteristic	Value
Type	Neural network family (LLM)
Developer	Chinese company DeepSeek AI
Open source	Yes (MIT, deepseek license)
Distribution model	Freemium
Russian language support	Yes
VPN required	No
Platforms	Web version, iOS, Android, API, Telegram
Context window	Up to 1M tokens
Number of models	22+ (including distilled)
Flagship model parameters	Up to 1.6T (MoE, 49B active)
Training tokens	Up to 32T tokens

Who Is DeepSeek Suitable For?

Developers and Programmers

DeepSeek provides powerful tools for writing, debugging, and refactoring code in many programming languages. DeepSeek-Coder and DeepSeek-V3 achieve strong results on Codeforces and LiveCodeBench benchmarks.

Researchers and Analysts

Models with a context of up to 1 million tokens allow analyzing large volumes of data, long documents, and entire code repositories. DeepSeek-R1 is effective for multi-step logical reasoning.

Students and Teachers

The tool helps explain complex topics, solve math problems, write essays, and check grammar. DeepSeek-Math specializes in equations, function analysis, and proofs.

Business and Automation

DeepSeek is suitable for building customer support chatbots, automating routine text tasks, and generating content. The API allows integrating models into existing business processes.

How to Use DeepSeek?

Via Web Interface

Regular users get free basic access at chat.deepseek.com. After signing up or signing in with a Google account, you can start a conversation by entering prompts in the input field. The DeepThink feature is available for in-depth analysis.

Via Mobile Apps

DeepSeek is available for download in the App Store (iOS) and Google Play (Android). The apps provide the same features as the web version, including file handling and voice input.

Via API

Developers can obtain an API key on the DeepSeek platform and integrate models into their projects. Documentation is available at api-docs.deepseek.com. The API supports Function Calling, Structured Output, Code Execution, Web Search, Batch Inference, and Fine-tuning.

Key DeepSeek Features

Text and Content Generation

DeepSeek models can create texts of varying complexity, from short answers to detailed articles, scripts, poems, and business letters. Russian language support is included.

Programming and Code Generation

DeepSeek-Coder and general-purpose models support writing code in Python, Java, C++, JavaScript, and other languages. The models can execute code, generate functions, and work with entire repositories.

Logical Reasoning and Mathematics

DeepSeek-R1 and DeepSeek-Math use chain-of-thought reasoning to solve complex math problems, equations, function analysis, and proofs. They achieve strong results on AIME and MATH benchmarks.

Multimodal Capabilities (DeepSeek-VL2)

DeepSeek-VL2 models work with images: they answer questions about pictures, recognize text (OCR), and analyze documents, tables, and diagrams.

DeepSeek Advantages

High Performance in Programming and Mathematics

DeepSeek-V3 shows results comparable to GPT-4o and OpenAI o1 on Codeforces. DeepSeek-R1 achieves high scores on AIME 2024 (91.4%) and GPQA Diamond (81.0%).

Huge Context Window

DeepSeek-V4 models support a context of up to 1 million tokens, allowing you to work with long documents, large projects, and agentic scenarios without losing information.

Free Basic Access

The web version and mobile apps are available for free without a subscription. Charges apply only to API usage.

Open Source

Models are distributed under the MIT license, allowing developers to adapt them to their own needs and use them in commercial projects.

DeepSeek Disadvantages

Limited Knowledge Freshness

The models' knowledge base is updated up to a certain date (for example, October 2023 for some versions). Information about more recent events may be missing.

Errors in Complex Queries

Sometimes the models misinterpret ambiguous or complex requests. DeepSeek-R1-Zero is prone to infinite repetitions and language mixing.

High Cost of Some Models

Prices for output tokens of specialized models (for example, DeepSeek-VL2 — $4800 per 1M output tokens) may be unaffordable for small projects.

What Problems Does DeepSeek Solve?

Educational Tasks

DeepSeek helps explain complex topics, solve math problems, write essays, perform translations, and check grammar. DeepSeek-Math specializes in equations, functions, and proofs.

Professional Development

The models generate code in many programming languages, assist with debugging, refactoring, and analysis of entire repositories. DeepSeek-Coder is optimized for programming.

Data Analysis and Document Processing

A context of up to 1 million tokens allows analyzing large volumes of text, extracting facts, summarizing documents, and working with long projects.

Creativity and Idea Generation

DeepSeek is suitable for writing scripts, poems, gift ideas, webinar content, and other creative tasks.

DeepSeek Pricing

Free Tier

The web version and mobile apps are available for free to regular users. The free version has limitations on the number of requests and available features.

Paid API

API usage costs depend on the model:

• DeepSeek-V4-Pro: ~$1.74 per 1M input / ~$3.48 per 1M output tokens
• DeepSeek-V4-Flash: ~$0.14 per 1M input / ~$0.28 per 1M output tokens
• DeepSeek-V3.1: $0.27 per 1M input / $1.00 per 1M output tokens
• DeepSeek-R1: $0.28 per 1M input / $0.42 per 1M output tokens
• DeepSeek-VL2: $9.50 per 1M input / $4800 per 1M output tokens

DeepSeek Terms of Use

Registration and Access

Registration or sign-in with a Google account is required to use the web version and apps. The free version has limitations.

Commercial Use

Models with the MIT license (DeepSeek-V3, DeepSeek-R1, DeepSeek-V3.1) allow commercial use. Some models are distributed under the DeepSeek license with separate terms.

API and Integration

API access requires registration on the platform and obtaining an API key. API usage is paid separately. Batch Inference and Fine-tuning are supported.

DeepSeek Availability

Platforms

DeepSeek is available via the web version (chat.deepseek.com), mobile apps for iOS and Android, Telegram, and API. It is also available through third-party services.

Geography

The largest share of DeepSeek site traffic comes from China, followed by the United States and Brazil. No VPN is required to use it.

Languages

The models support Chinese, English, Russian, and many other languages. The interface is available in Chinese and English.

How Is DeepSeek Different from Alternatives?

Open Source and Low Cost

Unlike closed models such as OpenAI GPT and Google Gemini, DeepSeek offers open source and significantly lower API prices. DeepSeek-V4-Flash costs 10–12 times less than the flagship version while maintaining a large context window.

Focus on Mathematics and Programming

DeepSeek-R1 and DeepSeek-Coder achieve results comparable to OpenAI o1 in math and programming tasks. DeepSeek models dominate AIME and LiveCodeBench benchmarks.

Chinese Development

DeepSeek is developed in China, making it one of the major competitors to OpenAI and Google in Asia. The models are trained on proprietary computing infrastructure, including Nvidia H800 clusters and Huawei Ascend chips.

Hybrid Reasoning Modes

DeepSeek-V3.1 and DeepSeek-V4 support both thinking mode (chain-of-thought reasoning) and a regular non-thinking mode, allowing users to choose the optimal balance between accuracy and speed.

Conclusion

DeepSeek is a powerful open-source neural network family specializing in natural language processing, programming, and mathematics. DeepSeek models offer free basic access, a context window of up to 1 million tokens, and competitive API pricing. Thanks to the open MIT license, strong benchmark results, and Russian language support, DeepSeek is one of the most discussed alternatives to leading global AI models, especially in software development, data analysis, and education.