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DeepSeek

chat.deepseek.com

Free plan WebWindowsmacOSiOSAndroidAPI
Visit chat.deepseek.com
Spec score 8.7 #17 of 65 in AI chatbots and assistants

What it is

DeepSeek is an AI assistant for chatting with AI models, available on the web and through official iOS and Android apps. The free plan is listed at free and includes the assistant and official mobile apps. DeepSeek also offers an API, with deepseek-flash identified as the model name to use; legacy deepseek-v4-flash names route to V4.1-Flash. The API follows a format compatible with OpenAI and Anthropic APIs, and their SDKs can be used by changing configuration. It supports external tool calls, with a strict mode that checks tool schemas against supported JSON Schema specifications. DeepSeek says V4.1-Flash is live on the API with native multimodal support. Its desktop Harness can work in the background, edit local files, and handle long, complex tasks; downloads are listed for macOS (Apple silicon, macOS 13 or later) and Windows. DeepSeek is headquartered in Hangzhou, China. Its privacy policy says personal data is processed and stored in China, and advises users not to submit sensitive personal data.

Spec sheet

Free plan
YesRead 20 Sep 2026 · cdn.deepseek.com
App integrations
YesRead 20 Sep 2026 · cdn.deepseek.com
Mobile apps
YesRead 20 Sep 2026 · cdn.deepseek.com
Support
DeepSeek lists [email protected] on its official site and [email protected] for privacy questions and requests.Read 11 Oct 2026 · deepseek.com
Headquarters
Hangzhou, ChinaRead 28 Sep 2026 · chat.deepseek.com
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.Read 11 Oct 2026 · api-docs.deepseek.com
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.Read 11 Oct 2026 · api-docs.deepseek.com
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.Read 11 Oct 2026 · api-docs.deepseek.com
Assistant
DeepSeek describes its app as an official AI assistant for chatting with leading AI models, powered by its latest flagship model.Read 11 Oct 2026 · deepseek.com
Data location
The privacy policy says DeepSeek directly collects, processes, and stores personal data in the People's Republic of China.Read 11 Oct 2026 · cdn.deepseek.com
Desktop Harness
DeepSeek Harness for desktop can work in the background, edit local files, and handle long, complex tasks.Read 11 Oct 2026 · deepseek.com
Desktop platforms
The official download page lists Harness downloads for macOS (Apple silicon, macOS 13 or later) and Windows.Read 11 Oct 2026 · deepseek.com
File uploads
YesRead 20 Sep 2026 · cdn.deepseek.com
Function tools
The API supports tool calls that let models call external tools, with strict mode validating tool schemas against supported JSON Schema specifications.Read 11 Oct 2026 · api-docs.deepseek.com
Mobile platforms
The official download page links to DeepSeek app downloads for iOS and Android.Read 11 Oct 2026 · deepseek.com
Native multimodal API
DeepSeek says V4.1-Flash is live on the API with native multimodal support.Read 11 Oct 2026 · deepseek.com
Notable limit
DeepSeek says its services are not designed or intended to process sensitive personal data and advises users not to provide it.Read 11 Oct 2026 · cdn.deepseek.com
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.Read 11 Oct 2026 · cdn.deepseek.com
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.Read 11 Oct 2026 · cdn.deepseek.com
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.Read 11 Oct 2026 · cdn.deepseek.com
Web search
YesRead 20 Sep 2026 · cdn.deepseek.com

Plans and prices

Free Free AI chat assistant · Official mobile apps Read 20 Sep 2026 · play.google.com
DeepSeek app Free Official AI assistant; chat with leading AI models for free Read 11 Oct 2026 · deepseek.com
DeepSeek API — deepseek-flash Priced on request Token-based billing; API pricing page could not be opened API access; current rates were not readable on the opened pricing page Read 11 Oct 2026 · api-docs.deepseek.com

Every DeepSeek plan and price →

Strong points and limits

Strong points

  • Free plan at free
  • Web search and file uploads are listed
  • API supports external tool calls
  • Desktop Harness can edit local files

Limits

  • Services are not intended for sensitive personal data
  • Personal data is stored in China

Who it suits

DeepSeek suits people seeking a free AI assistant with web search, file uploads, and mobile apps. Its API and desktop Harness are also relevant to developers and users who need tool calls or local-file work.

Verdict

DeepSeek combines a free chat assistant with API and desktop options. Readers should consider its stated data handling and avoid submitting sensitive personal data.

Where Specifiction places it

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