DeepSeek
Officially listedOpen-source AI large models known for extreme cost-effectiveness and top-tier reasoning.
DeepSeek
DeepSeek is a top research lab focused on the foundations of artificial general intelligence (AGI), whose outstanding open-source model family and extreme cost-effectiveness have broken industry monopolies. Whether you are a developer needing high-efficiency APIs, an engineer seeking coding assistance, or a researcher requiring powerful logical reasoning, DeepSeek offers free and ultra-low-cost alternatives that rival the world's strongest closed-source models.
Core Capabilities
- Top-tier logical reasoning: The flagship DeepSeek-R1 and V3 models show world-leading performance in logical reasoning, complex math, and long-text understanding.
- Visible chain-of-thought: Supports deep thinking (Chain-of-Thought) display, letting users clearly see the AI's reasoning and decision process for more transparent, controllable results.
- Excellent code generation: Programming-optimized capability is strong at single-function generation, code completion, and debugging, fitting mainstream IDE plugins perfectly.
- Fully compatible API ecosystem: The API is fully compatible with the OpenAI SDK standard; developers only need to change the base URL and key to plug into existing workflows.
- Extremely cost-effective usage: A highly competitive token-based billing model, with cache hits enjoying discounts of up to 90%, sharply cutting operating costs.
- Free on every platform: Completely free web and mobile apps give everyone high-quality AI conversation anytime, anywhere.
Who It's For If you are an AI developer pursuing maximum cost control, a programmer who relies on code completion, or a startup needing powerful underlying compute on a budget, DeepSeek is the best way to cut costs without compromising performance. Everyday users and researchers also benefit from world-class math and logical reasoning through its free endpoints.
Unique Advantages In competition with the world's top models, DeepSeek has built an absolute moat with "top open-source architecture plus rock-bottom pricing." It delivers comparable deep-thinking capability at a tiny fraction of competitors' cost and grants developers the freedom of local private deployment, truly democratizing the technology.
Editor's Review With remarkable technical originality, a disruptive pricing system, and an open ecosystem stance, DeepSeek is a breath of fresh air in today's AI field. Although there is minor room for improvement in certain humanlike long-form writing, for any individual or enterprise needing a large language model as a foundation, it is a dominant and unmissable first choice on the market right now.
Pricing
### 💰 定价模式：免费增值 **起步价**：免费 #### 主要方案 - **网页端与App**：免费 - 面向普通用户，提供日常对话、深度思考与推理服务。 - **API 调用**：按量计费 - 提供低至 $0.14/百万Token 的输入价格，缓存命中（Cache Hit）可享 90% 极速降价优惠。 #### 试用/其他信息 API 采用纯按量计费模式，无需支付固定订阅费用，且提供兼容 OpenAI 的接口标准，方便低成本迁移。 — Visit website
FAQ
Is DeepSeek free?
DeepSeek's web and mobile apps are completely free for regular users. For developers, the API uses usage-based (token) billing at extremely low prices, with cache-hit discounts of up to 90%.
What can DeepSeek do?
DeepSeek offers powerful intelligent conversation, logical reasoning, math problem solving, and code generation. Developers can integrate the API into applications, while regular users can use it for everyday writing help, logical reasoning, and efficient coding.
How good is DeepSeek's coding assistance?
It excels at code generation and logic debugging; its vertically optimized capability fits mainstream IDEs perfectly and rivals the world's strongest closed-source models in code benchmarks.
Does DeepSeek support on-premise private deployment for enterprises?
Yes. Committed to open source, DeepSeek allows enterprises to deploy its open model weights (such as DeepSeek-V3/R1) locally for private use, ensuring a very high level of data security and privacy.
What's the difference between DeepSeek and OpenAI's o1 model?
DeepSeek-R1 offers deep thinking (CoT) and complex logical reasoning similar to OpenAI o1, but its model is fully open source and API costs are more than 95% lower.
Is DeepSeek's API easy to integrate?
Very convenient. The API is fully compatible with the OpenAI SDK standard; developers only need to change the base_url in existing code and fill in the corresponding API key for a seamless migration.