ChatGPTAI Chatbots
Freemium
OpenAI's flagship AI chatbot for writing, coding, research, and reasoning powered by GPT-5.
Visit Website →DeepSeek
FreeChina's open-source AI chatbot offering free access to powerful reasoning and coding models.
What is DeepSeek?
DeepSeek is a Chinese AI lab whose open-weight models compete with frontier systems on coding and reasoning at a fraction of the cost, using a Mixture-of-Experts architecture that keeps inference cheap. Its current generation offers a very large context window and ships in both a flagship and a cost-optimised variant. The web app is free, the API is OpenAI-compatible so migration often means changing a base URL, and the weights are MIT-licensed for self-hosting. Two things belong in any decision. Hosted requests route through servers in China and are subject to Chinese data law, which is why numerous governments and agencies have restricted DeepSeek on official devices; security researchers have also reported weak jailbreak resistance. Self-hosting the open weights avoids both the data-residency question and the hosted censorship filters. And API pricing has moved sharply in both directions during 2026, so verify current rates rather than trusting older figures.
Key Features
Chain-of-Thought ReasoningOpen-Source ModelsFree Web Access128K Context WindowCode GenerationMath Problem SolvingUltra-Low API Pricing
How to Use DeepSeek
1Visit deepseek.com and sign in for free
2Choose between standard chat (V3) or thinking mode (R1)
3Type your question, coding task, or math problem
4Review the step-by-step reasoning output
5Copy or export the response for your use
6Access the API at platform.deepseek.com for developer integration
✅ Best For
- Developers and researchers on a budget
- Students solving math and logic problems
- Coders needing fast code generation
- Organizations exploring open-source AI
❌ Not For
- Users with strict data privacy requirements (China-based servers)
- Real-time internet browsing tasks
- Image generation
- Tasks needing Google or Microsoft ecosystem integration
Reviews
No reviews yet. Be the first to review DeepSeek!
Pricing
Free$0
- ✓Unlimited web chat
- ✓DeepSeek V3 and R1 access
API $0.028/1M tokens
- ✓Cache-hit input pricing
- ✓extremely cost-effective for developers
Prompts to Try
Solve this calculus problem step by step and show your working
Write a Python function to implement a binary search tree with insert, delete, and search
Explain the differences between REST and GraphQL APIs with code examples
Debug this Rust code and explain what each error means
Use Cases
A computer science student struggling with a dynamic programming problem pastes it into DeepSeek R1 and gets a step-by-step solution with a clear explanation of the logic
A solo developer building a side project uses DeepSeek's API to power their app's AI features because the token cost is 95 percent cheaper than GPT-4 at their usage volume
A data science intern asks DeepSeek to explain a complex statistics concept from their coursework and gets a breakdown with worked examples that their textbook never provided
A startup CTO evaluates DeepSeek for their internal tools because the open-source model can be self-hosted on their own servers, keeping sensitive customer data off third-party clouds
A high school math teacher uses DeepSeek to generate a set of calculus problems at three different difficulty levels, saving two hours of exam prep every week
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