DeepSeek
Open reasoning models at a fraction of the cost
Free chat app; API priced per token, dramatically cheaper than Western rivalsWhat is DeepSeek?
DeepSeek shook the industry by training frontier-class models on a modest budget and releasing the weights openly. The chat app is free and capable, the R1 reasoning model shows its chain of thought, and the API undercuts rivals on price by an order of magnitude.
Who is DeepSeek best for?
Developers and researchers who want frontier-class reasoning at a fraction of the usual price.
Key strengths
- Frontier-level reasoning at very low API prices
- Open weights you can self-host
- Visible reasoning traces in R1
- Free and capable web and mobile apps
- Strong math and code performance
Pricing
Free chat app; API priced per token, dramatically cheaper than Western rivals
Pros and cons
Pros
- R1 reasoning matches or beats far more expensive models on math and code
- The API is dramatically cheaper than GPT-5 or Claude equivalents
- Open weights let you self-host and fine-tune without restrictions
Cons
- The hosted app has limited features compared to full assistants like ChatGPT
- Data routing through China is a legitimate concern for sensitive business use
Our verdict
DeepSeek changed the industry's price-performance math overnight. For technical users comfortable with its caveats, it is an extraordinary value.
How we review: every profile on AIToolsLLM is based on hands-on testing under the standards described on our methodology page. Pricing reflects what the vendor displayed at our last check and may have changed since.
Alternatives to DeepSeek
If DeepSeek is not quite right for you, these tools cover similar ground and are worth a look:
Frequently asked questions
Is DeepSeek safe to use?
The models are open and can be self-hosted for full control. Using the hosted app means your prompts go to servers in China, so avoid sensitive data there, as with any cloud service.
What is DeepSeek R1?
R1 is DeepSeek's reasoning model. It thinks step by step before answering and matches or approaches top reasoning models on math and code benchmarks.
Can I run DeepSeek locally?
Yes. Distilled versions run on consumer hardware through tools like Ollama; the full models need serious GPUs.