Jan vs DeepSeek
Side-by-side comparison to help you choose the best tool.
Jan
freeJan is an open-source desktop application for running AI models locally - a privacy-first alternative to ChatGPT that runs entirely offline. Like LM Studio, it provides a chat interface for local models, but also supports connecting to remote model APIs. Jan is fully open-source with an extension platform, making it the most customisable local AI desktop app.
DeepSeek
freemiumDeepSeek is a Chinese AI company that released DeepSeek-R1 and DeepSeek-V3 - models that match or exceed GPT-4 and Claude 3.5 Sonnet performance at a fraction of the training cost. DeepSeek-R1's reasoning features and chain-of-thought transparency shocked the AI industry. Available as open-weight models and via their API, DeepSeek demonstrated that frontier AI doesn't require massive compute budgets.
| Feature | Jan | DeepSeek |
|---|---|---|
| Pricing | free | freemium |
| Category | - | - |
| Rating | 4.3 | 4.7 |
| Best For | Privacy-first users and developers wanting a fully open-source, offline-capable AI chat app with extensibility and model flexibility | Developers wanting frontier-class reasoning features at low cost, or researchers studying chain-of-thought reasoning in LLMs |
| Views | 50 | 109 |
Pros
- Completely open-source with full customisation
- Works both offline and with remote APIs
- Extension system enables powerful customisation
Cons
- Less polished UI than LM Studio
- Smaller community
Pros
- Frontier performance at much lower cost
- Open-weights enables self-hosting
- R1 reasoning transparency is rare among top models
Cons
- Chinese company raises data sovereignty concerns for some enterprises
- API less reliable than OpenAI or Anthropic
- Local AI chat (fully offline)
- Remote API connection support
- Open-source & extensible
- Model hub integration
- Extension ecosystem
- DeepSeek-R1 reasoning model
- Chain-of-thought transparency
- Open-weight models available
- API access
- Competitive with GPT-4 performance