AI assistants & agents
DeepSeek
Chat with DeepSeek’s open models, or use them via API.
Product insights
DeepSeek at a glance
Value proposition
Frontier-level models with open weights and an affordable API.
Problem solved
Top closed models can be expensive to run at scale.
Audience
Users, developers, and companies building on open models.
Pricing and access
Web and app chat are free; the API is pay-as-you-go.
Market
- AI assistants
- Open-weight models
Tech stack
- DeepSeek-V4
- DeepSeek-R1 reasoning
01Why it is here
What is DeepSeek?
DeepSeek AI offers a free chatbot and an API for its open models. DeepSeek-V4 handles general tasks and DeepSeek-R1 focuses on step-by-step reasoning for math and code.
02Workflow
How to use DeepSeek
- 01
Start a chat
Use the web chat or the DeepSeek app.
- 02
Turn on deep thinking
Enable reasoning mode for hard problems.
- 03
Use the API
Create an API key on the developer platform.
03Capabilities
Key features of DeepSeek
- Free web and app chat
- Reasoning mode
- Open-weight models
- Low-cost API
04Use cases
What is DeepSeek best for?
- Math and coding problems
- Cost-sensitive AI apps
- Self-hosting open models
05Questions
FAQ about DeepSeek
Is DeepSeek free?
Chat on the web and app is free; the API is paid by usage.
Is DeepSeek open source?
DeepSeek releases open models such as DeepSeek-V4 and R1; check each license.
Official website snapshot
deepseek.com
DeepSeek is a Chinese AI lab that open-sources frontier models such as DeepSeek-V4 and DeepSeek-R1. You can chat with them for free on the web and app, or call them through a low-cost API.
