DeepSeek AI: Official Website, Chat, App, API & Models
DeepSeek AI is the chatbot, mobile app, developer API, and open model ecosystem from DeepSeek. This page helps you choose the right DeepSeek destination: the official website, official web chat, app download, login, API pricing, model information, service status, or quick browser chat through Chat-Deep.ai.
Important: Chat-Deep.ai is an independent DeepSeek guide and browser access site. It is not affiliated with DeepSeek, DeepSeek.com, the official DeepSeek app, or the official DeepSeek developer platform.
DeepSeek Official Links and Quick Paths
Most people searching for DeepSeek are looking for one of a few things: the official DeepSeek website, the official chat, the mobile app, API access, pricing, models, or service status. Use the table below to go directly to the right DeepSeek resource.
| DeepSeek task | Best destination | Why this is the right path |
|---|---|---|
| Find the main official DeepSeek website | DeepSeek.com | The official entry point for DeepSeek products, app access, API access, research, and company information. |
| Use the official DeepSeek web chat | Official DeepSeek Chat | The canonical browser-based DeepSeek chat experience with official account access. |
| Start quick browser chat from this site | Chat-Deep.ai Browser Chat | A fast independent route for browser-based access and navigation to DeepSeek resources. |
| Download or use the mobile app | DeepSeek App Guide | Best starting point for iPhone, Android, app download links, and mobile usage notes. |
| Login to DeepSeek | DeepSeek Login Guide | Use this when you need help reaching the correct login page or understanding account access. |
| Build with the DeepSeek API | DeepSeek API Guide | Best for API keys, base URL, model names, integration basics, and developer setup. |
| Check API pricing | DeepSeek Pricing Guide | Best for token pricing, cache-hit savings, billing notes, and cost estimates. |
| Compare DeepSeek models | DeepSeek Models Hub | Best for DeepSeek-V3.2, reasoning mode, open model releases, and model naming. |
| Check if DeepSeek is down | DeepSeek Status Guide | Best for uptime checks, incident links, and troubleshooting when DeepSeek is not working. |
What Is DeepSeek AI?
DeepSeek AI refers to the DeepSeek artificial intelligence ecosystem: an official web chatbot, a mobile app, a developer platform, API models, and open model releases. When someone says “DeepSeek,” they may mean the company, the official chat product, the API, or a model family such as DeepSeek-V3.2.
The purpose of this page is to keep those DeepSeek meanings clear. Instead of sending every visitor to the same place, it helps you choose the right DeepSeek path based on what you want to do: chat, download the app, log in, build with the API, check pricing, understand models, or troubleshoot service status.
For a deeper background explanation, read our full What Is DeepSeek guide. For immediate use, start with DeepSeek Browser Chat or open the official DeepSeek website.
Official DeepSeek vs Chat-Deep.ai
DeepSeek and Chat-Deep.ai are not the same product. Use official DeepSeek properties when you need official account access, app downloads, API billing, support, or platform features. Use Chat-Deep.ai when you want a focused independent guide, quick browser access, and a simpler way to navigate DeepSeek resources.
| Option | Use it for | Best next step |
|---|---|---|
| Official DeepSeek | Official web chat, app, platform, API keys, billing, support, pricing, and service status. | Visit DeepSeek.com |
| Chat-Deep.ai | Quick browser chat, independent DeepSeek guides, API/pricing/model explainers, and navigation help. | Start Browser Chat |
Trust note: This page links to official DeepSeek sources wherever account access, app downloads, API keys, billing, privacy policy, or status information is involved. Chat-Deep.ai does not claim to be the official DeepSeek website.
DeepSeek Chat, App, API, and Models at a Glance
The DeepSeek ecosystem can be understood in four practical layers: chat, app, API, and models. Each layer serves a different search intent.
| DeepSeek layer | What it means | Best for | Where to go |
|---|---|---|---|
| DeepSeek Chat | The official browser chatbot experience from DeepSeek. | Everyday AI chat, file reading, coding help, and general assistance. | Official chat or browser chat guide |
| DeepSeek App | The official mobile DeepSeek experience for supported devices. | Using DeepSeek on iPhone, Android, phone, or tablet. | App guide |
| DeepSeek API | Programmatic access to DeepSeek models through the developer platform. | Building apps, automations, agents, chatbots, and integrations. | API guide |
| DeepSeek Models | Model families and releases behind DeepSeek products and open-weight resources. | Understanding model names, chat vs reasoner, open releases, and local research options. | Models hub |
| DeepSeek Pricing | Token-based API costs and cache-hit/cached-input savings. | Estimating cost before using the DeepSeek API in a product. | Pricing guide |
| DeepSeek Status | Service availability, incidents, and downtime checks. | Checking whether DeepSeek chat or API access is unavailable. | Status guide |
DeepSeek API Models and Pricing Snapshot
The official DeepSeek API currently lists two main model names for developers: deepseek-chat and deepseek-reasoner. In the API, both correspond to DeepSeek-V3.2 with a 128K context limit: deepseek-chat is the non-thinking mode and deepseek-reasoner is the thinking mode.
| API model | Mode | Best for |
|---|---|---|
deepseek-chat | Non-thinking mode of DeepSeek-V3.2 | General chat, summaries, content tasks, JSON output, tool calls, and most everyday product workflows. |
deepseek-reasoner | Thinking mode of DeepSeek-V3.2 | Harder reasoning, multi-step problem solving, complex analysis, and tasks where deeper reasoning matters. |
Current public API pricing is listed per 1 million tokens. The official docs state that prices may change, so always verify the official pricing page before production use.
| Token type | Current listed price per 1M tokens |
|---|---|
| Input tokens — cache hit | $0.028 |
| Input tokens — cache miss | $0.28 |
| Output tokens | $0.42 |
Need a cost estimate? Use our DeepSeek API cost calculator or read the full DeepSeek pricing guide.
DeepSeek Safety, Privacy, and Accuracy Notes
Privacy: Treat prompts, uploaded files, images, and chat history as sensitive unless you have reviewed the official DeepSeek privacy policy and are comfortable with how the service handles user content and account data.
Accuracy: DeepSeek can be useful for research, writing, coding, summarization, and reasoning, but AI output can still be incomplete or wrong. For legal, medical, financial, safety, or other high-stakes decisions, verify answers with qualified sources.
Official support: For account, billing, API, app, or outage issues, start with official DeepSeek support resources, the official API FAQ, and the official status page. For independent troubleshooting, use our DeepSeek not working guide.
DeepSeek FAQ
What is the official DeepSeek website?
The main official English DeepSeek website is DeepSeek.com. It links to the official web chat, app access, developer platform, API information, and other official DeepSeek resources.
What is DeepSeek AI?
DeepSeek AI is an artificial intelligence ecosystem that includes an official chatbot, mobile app, developer API, model releases, and open model resources. Depending on context, “DeepSeek” may refer to the company, the web chat, the app, the API, or a model family.
Is Chat-Deep.ai the official DeepSeek website?
No. Chat-Deep.ai is an independent DeepSeek guide and browser access site. It is not affiliated with DeepSeek, DeepSeek.com, the official DeepSeek app, or the official DeepSeek developer platform.
How do I use DeepSeek Chat?
Use the official DeepSeek web chat at chat.deepseek.com for the canonical official experience. You can also start from our DeepSeek Browser Chat page for quick access and guidance.
Is DeepSeek free to use?
The official DeepSeek website describes web access as free. The official app is free to download, while the developer API is billed separately based on token usage. Always check the official platform and pricing page for current terms.
What is the difference between DeepSeek Chat, DeepSeek App, and DeepSeek API?
DeepSeek Chat is for browser-based conversation. The DeepSeek App is for mobile use. The DeepSeek API is for developers who want to add DeepSeek models to products, workflows, or applications using API keys and token-based billing.
What are deepseek-chat and deepseek-reasoner?
In the official API, deepseek-chat is the non-thinking mode of DeepSeek-V3.2, while deepseek-reasoner is the thinking mode of DeepSeek-V3.2. Both are developer-facing model names used through the API.
How much does the DeepSeek API cost?
The current official pricing snapshot lists $0.028 per 1M input tokens for cache hits, $0.28 per 1M input tokens for cache misses, and $0.42 per 1M output tokens. Prices may change, so verify the official pricing page before using the API in production.
Where can I check if DeepSeek is down?
Use the official DeepSeek status page first. You can also use our DeepSeek Status Guide for troubleshooting steps and links.
Can I run DeepSeek models locally?
Some DeepSeek model releases and related resources are available through official repositories and model hubs. Local use depends on the specific model, license, hardware, and deployment method. Start with our DeepSeek Models Hub for a focused overview.
Official Sources and Last Verified
Last verified: April 17, 2026. DeepSeek product details, API models, pricing, and availability can change. Use the official sources below when you need the latest information.