DeepSeek
DeepSeek is an AI assistant available on the web and through official iOS and Android apps.
What DeepSeek is
DeepSeek is an AI assistant available on the web and through official iOS and Android apps. The app is described as a way to chat with leading AI models and is powered by DeepSeek’s latest flagship model. Listed assistant features include web search, file uploads and app integrations. The service also offers API access: its documentation names deepseek-flash as the model to use and says legacy deepseek-v4-flash names route to V4.1-Flash. The API format is compatible with OpenAI and Anthropic APIs, and the documentation says their SDKs can be used by changing configuration. DeepSeek describes integrations with Claude Code, OpenCode and OpenClaw, along with tool calls and strict schema validation. It says V4.1-Flash is live on the API with native multimodal support. Desktop Harness downloads are listed for macOS and Windows; Harness can work in the background, edit local files and handle long, complex tasks. DeepSeek’s privacy policy says personal data is stored in China and advises against providing sensitive personal data.
Good
- Free assistant with official mobile apps.
- Web search and file uploads are listed.
- API supports tool calls.
- Chat history can be managed in settings.
Watch out
- Personal data is stored in China.
- Service is not intended for sensitive personal data.
- Internet and email transmission are not fully secure.
Who it suits
DeepSeek may suit people seeking a free AI assistant with web search and file uploads, or developers looking to connect through its API. Desktop Harness is described for long, complex tasks and local file editing.
Verdict
DeepSeek offers a free chat assistant alongside API and desktop options. Review its stated data practices and avoid entering sensitive personal data.
Plans and prices
From DeepSeek's own pricing page, checked 20 Sep 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Free | Free | AI chat assistant · Official mobile apps |
| DeepSeek app | Free | Official AI assistant; chat with leading AI models for free |
| DeepSeek API — deepseek-flash | Priced on request | API access; current rates were not readable on the opened pricing page · Token-based billing; API pricing page could not be opened |
The facts
Each one read from DeepSeek's own pages, with the date it was checked.
What it does
- Agent integrations
- DeepSeek's documentation describes integrations with Claude Code, OpenCode, and OpenClaw, and says supported AI coding tools can use DeepSeek as their backend model.checked 11 Oct 2026
- API compatibility
- The API uses a format compatible with OpenAI and Anthropic APIs, and the documentation says their SDKs can be used by changing configuration.checked 11 Oct 2026
- API models
- The API documentation identifies deepseek-flash as the model name to use and says the legacy deepseek-v4-flash names route to V4.1-Flash.checked 11 Oct 2026
- Assistant
- DeepSeek describes its app as an official AI assistant for chatting with leading AI models, powered by its latest flagship model.checked 11 Oct 2026
- Data location
- The privacy policy says DeepSeek directly collects, processes, and stores personal data in the People's Republic of China.checked 11 Oct 2026
- Desktop Harness
- DeepSeek Harness for desktop can work in the background, edit local files, and handle long, complex tasks.checked 11 Oct 2026
- File uploads
- Yeschecked 20 Sep 2026
- Function tools
- The API supports tool calls that let models call external tools, with strict mode validating tool schemas against supported JSON Schema specifications.checked 11 Oct 2026
- Native multimodal API
- DeepSeek says V4.1-Flash is live on the API with native multimodal support.checked 11 Oct 2026
- Notable limit
- DeepSeek says its services are not designed or intended to process sensitive personal data and advises users not to provide it.checked 11 Oct 2026
- Privacy data
- The privacy policy says DeepSeek may collect prompts, uploaded files, photos, chat history, device and network data, and approximate location based on IP address.checked 11 Oct 2026
- Security measures
- DeepSeek says it maintains commercially reasonable technical, administrative, and physical measures to protect personal data, while noting that internet and email transmission are not fully secure.checked 11 Oct 2026
- Support
- DeepSeek lists [email protected] on its official site and [email protected] for privacy questions and requests.checked 11 Oct 2026
- User controls
- The privacy policy says users can manage, copy, or delete chat history in settings and may opt out of use of personal data for model training or technology optimization.checked 11 Oct 2026
- Web search
- Yeschecked 20 Sep 2026
Where it runs
- App integrations
- Yeschecked 20 Sep 2026
- Desktop platforms
- The official download page lists Harness downloads for macOS (Apple silicon, macOS 13 or later) and Windows.checked 11 Oct 2026
- Mobile apps
- Yeschecked 20 Sep 2026
- Mobile platforms
- The official download page links to DeepSeek app downloads for iOS and Android.checked 11 Oct 2026
Money
- Free plan
- Yeschecked 20 Sep 2026
The company
- Headquarters
- Hangzhou, Chinachecked 28 Sep 2026
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