DeepSeek AI Guide: Official Website, App, API & Models
DeepSeek AI is an AI platform and model ecosystem that includes the official DeepSeek website, web chat, mobile app, developer API, and open model releases. Use this page to find the right DeepSeek destination—or start with Chat-Deep.ai for quick browser access.
Chat-Deep.ai is an independent site and is not affiliated with the official DeepSeek website, app, or developer platform.
Choose Your DeepSeek Path
The best DeepSeek starting point depends on what you want to do. Use the options below to go directly to the right official product—or use Chat-Deep.ai for quick browser access.
Official DeepSeek Website
Use the official DeepSeek website for product pages, company information, research, policies, and the main entry point to the DeepSeek ecosystem.
Official Web Chat & App
Use the official web chat or mobile app when you want the canonical DeepSeek experience with account-based access, synced history, and native product features.
Developer Platform & API
Use the official platform and API docs when you need API keys, billing, model endpoints, pricing details, and developer documentation.
Models & Local Use
Use the DeepSeek models hub, Hugging Face, and GitHub when you want to compare model families, understand naming, or explore local and open-weight use.
What Is DeepSeek AI?
DeepSeek is an AI company and product ecosystem. Depending on context, people may mean the official chatbot, the mobile app, the developer platform, or the open model families behind them.
That is why a single “DeepSeek” search can lead to several different destinations: the official website, web chat, mobile app, API platform, model repositories, or independent guides like Chat-Deep.ai. This page is designed to help you choose the right one quickly.
Need a deeper explanation? Read our full What Is DeepSeek guide
Official DeepSeek vs Chat-Deep.ai
These are not the same product. Use the official DeepSeek website, web chat, app, and platform when you need official accounts, downloads, API billing, or product support. Use Chat-Deep.ai when you want quick browser access and an independent guide to DeepSeek resources.
Best for official accounts, app downloads, and API access
Choose the official DeepSeek website when you need the canonical DeepSeek experience across web chat, mobile app, platform, pricing, and service status.
- Official website, web chat, and mobile app
- Developer platform, API keys, and billing
- Product downloads, support, and service status
Best for quick browser chat and independent guidance
Choose Chat-Deep.ai when you want fast browser-based access, simple navigation to the right DeepSeek resource, and independent help comparing official DeepSeek destinations.
- Quick browser access without app installation
- Independent guides for app, API, pricing, and models
- A simple starting point for choosing the right DeepSeek path
Which DeepSeek Should You Use?
Choose DeepSeek by task, not by hype. This table helps you find the right product, endpoint, or model for your specific need.
| If you want to… | Best option | Why it fits |
|---|---|---|
| Quick browser chat without login | Chat-Deep.ai Browser Chat | Fastest route from this site. No login or installation required. |
| Official logged-in browser chat | Official Web Chat | Best when you want the canonical DeepSeek web experience with your official account. |
| Use DeepSeek on a phone or tablet | Official DeepSeek App | Native mobile experience with synced chat history across supported platforms. |
| Build with DeepSeek in a product | Developer Platform & API | Best for API keys, billing, and OpenAI-compatible integration. |
| General chat, documents, or agents | DeepSeek-V3.2 | Best all-around model family for everyday chat, documents, and agent workflows. |
| Harder reasoning or step-by-step logic | deepseek-reasoner / DeepSeek-R1 | Best when you need stronger reasoning, multi-step problem solving, or the open R1 family for self-hosting. |
| Generate, explain, or review code | DeepSeek Coder | Code-specialized family for programming, code generation, and review workflows. |
| Solve math-heavy prompts | DeepSeek Math | Built for equations, proofs, and more structured quantitative reasoning. |
| Extract text from documents or images | DeepSeek-OCR / OCR-2 | OCR-focused releases for document parsing, markdown conversion, and text extraction. |
| Run DeepSeek on your own hardware | Hugging Face / GitHub | Official open-weight sources for local deployment, downloads, and research use. |
Important: The official API docs state that the APP/WEB version may differ from the API version. In the API, deepseek-chat is the non-thinking mode of V3.2 and deepseek-reasoner is the thinking mode.
DeepSeek Products & Model Matrix
DeepSeek covers general chat, advanced reasoning, coding, math, OCR, local deployment, and API integration. This table focuses on the releases most people search for.
| Product / Model | What it is | Best for | Where to go |
|---|---|---|---|
| DeepSeek Website | Official hub for chat, app, platform, pricing, and status. | Main official entry point. | Official website |
| DeepSeek Web Chat | Official browser chat for everyday use. | Quick chat without installing anything. | Official chat |
| DeepSeek App | Mobile app with login, history sync, web search, Deep-Think mode, and file upload. | Native iPhone or Android access. | App page |
| DeepSeek-V3.2 | Current flagship. deepseek-chat (non-thinking) and deepseek-reasoner (thinking). 128K context. MIT-licensed. | Chat, documents, tool use, agents. | Model card |
| DeepSeek-R1 | Reasoning-focused open family (Jan 2025). MIT-licensed with distilled variants. | Reasoning research and self-hosting. | Repository |
| DeepSeek Coder | Code-specialized model family. | Code generation, debugging, and review. | Project page |
| DeepSeek Math | Math-focused family for quantitative reasoning. | Equations, proofs, and symbolic math. | Repository |
| DeepSeek-OCR | Open OCR model for document and image understanding. MIT-licensed. | Document-to-markdown, OCR, screenshots. | Model card |
| DeepSeek-OCR-2 | Newer OCR release (Visual Causal Flow). Apache 2.0. | Updated OCR and document workflows. | Model card |
For older releases and deeper explainers, browse our full DeepSeek models hub. That includes DeepSeek-V3.1, DeepSeek V3, and other model-specific pages.
Latest DeepSeek Releases
DeepSeek changes fast. This timeline shows what changed and when, so you can track the evolution of the product stack.
- January 15, 2025 — DeepSeek App. Official mobile app launch for iOS and Android. Features include easy login, cross-platform history sync, web search, Deep-Think mode, and file upload.
- January 20, 2025 — DeepSeek-R1. Major reasoning-focused open model family. MIT-licensed with distilled variants.
- March 25, 2025 — DeepSeek-V3-0324. V3 update with stronger reasoning, better front-end generation, and smarter tool use.
- May 28, 2025 — DeepSeek-R1-0528. R1 refresh with better benchmarks, fewer hallucinations, and new JSON output and function calling support.
- August 21, 2025 — DeepSeek-V3.1. First agent-era release. Introduced Think and Non-Think modes in one model.
- September 22, 2025 — DeepSeek-V3.1-Terminus. Stability update with stronger code and search agent behavior.
- September 29, 2025 — DeepSeek-V3.2-Exp. Experimental preview with DeepSeek Sparse Attention (DSA). API prices cut by 50%+.
- December 1, 2025 — DeepSeek-V3.2. Official flagship release across App, Web, and API. First model to integrate thinking directly into tool use. Also released V3.2-Speciale for API-only reasoning.
For deeper release explainers, start with our DeepSeek-V3.2 guide and then browse the full models hub.
DeepSeek API Pricing Snapshot
The official DeepSeek API is billed by token usage. Both deepseek-chat and deepseek-reasoner share the same unified pricing. Here are the current public rates per 1 million tokens:
| Token Type | Price per 1M Tokens |
|---|---|
| Input (cache hit) | $0.028 |
| Input (cache miss) | $0.28 |
| Output (generation) | $0.42 |
Need to estimate real usage before you build? Try our DeepSeek API cost calculator to compare chat vs reasoner costs and cache-hit savings.
Pricing notes: DeepSeek supports context caching. Repeated or reused input is billed at the cache-hit rate — a 90% savings on input costs. Both chat and reasoner modes use the same pricing. Prices can change, so always check the official pricing page or our pricing guide.
Run DeepSeek Locally
DeepSeek is not just a hosted chatbot. Major model families are openly published, making local deployment a core part of the ecosystem. Here are your main options:
Fastest desktop route. Start with a GUI runner like LM Studio or Ollama. These give you quick local chat with minimal setup.
Developer route. Use the official Hugging Face organization and GitHub repositories for scripted inference and open-weight research.
High-performance route. For production-style serving, use engines like vLLM or SGLang.
OCR route. For document conversion and image text extraction, start with DeepSeek-OCR or DeepSeek-OCR-2.
Lower-resource route. If you lack the hardware for full-size models, start with smaller distilled or community-quantized versions. These are the most realistic option for solo developers.
Want a broader tutorial? See our guide on how to build your own app with DeepSeek.
Privacy, Accuracy & Official Support
Privacy. DeepSeek’s privacy policy states that the service may collect account details, prompts, uploaded files, photos, feedback, chat history, device and network data, and approximate IP-based location data. The policy also says the services are not designed to process sensitive personal data. Avoid sharing sensitive information unless you fully understand the official policy.
Accuracy. DeepSeek’s own policy warns that model output may not always be factually accurate. Use DeepSeek as an assistant, not as the final authority for medical, legal, financial, or other high-stakes decisions.
Official support. Start with the official FAQ, the service status page, or the official platform for account or billing issues. For an independent walkthrough, see our troubleshooting guide.
Frequently Asked Questions
What is the official DeepSeek website?
The main official English portal is DeepSeek.com. It links to the official web chat, app download page, developer platform, API pricing, service status, and research pages.
What is DeepSeek?
DeepSeek is a Chinese AI company founded in July 2023 by Liang Wenfeng. It is funded by the quantitative hedge fund High-Flyer and based in Hangzhou, China. The company develops large language models and publishes many as open-weight releases. It became globally known after the January 2025 release of DeepSeek-R1, which rivaled top Western AI models at much lower training costs.
Is DeepSeek free to use?
The official DeepSeek web product is currently free to access. The official mobile app is also free to download and use. The developer API is billed separately based on token usage. Check the Billing page for any available granted balance or topped-up balance.
What is the difference between DeepSeek web, app, API, and open models?
The web and app are official end-user products for everyday chat. The API is for developers who need keys, billing, and programmatic access. The open models on Hugging Face and GitHub are for research, self-hosting, and local deployment.
What is the difference between DeepSeek-V3.2 and DeepSeek-R1?
DeepSeek-V3.2 is the current flagship. It balances general use, tool use, long context, and agent workflows. DeepSeek-R1 is the earlier reasoning-focused open family. In the official API today, deepseek-reasoner maps to V3.2 thinking mode — not the original R1.
What are DeepSeek-OCR and DeepSeek-OCR-2?
These are vision-OCR releases for document understanding, screenshot reading, and document-to-markdown workflows. DeepSeek-OCR uses the MIT license. DeepSeek-OCR-2 uses Apache 2.0.
How much does the DeepSeek API cost?
Current pricing per million tokens: $0.028 for input cache hits, $0.28 for input cache misses, and $0.42 for output. Both deepseek-chat and deepseek-reasoner share the same price. Always check the official pricing page for the latest numbers.
Can I run DeepSeek models on my own computer?
Yes. Many releases can be run locally using Ollama, LM Studio, or vLLM. Hardware requirements vary by model size. Large flagship releases need serious GPU resources. Distilled or quantized versions work on more modest hardware.
Does DeepSeek collect prompts and uploaded files?
The official privacy policy says DeepSeek may collect prompts, uploaded files, photos, chat history, and other user content, along with device, network, and location data. Avoid sending sensitive data unless you have reviewed the policy.
Where should I check if DeepSeek is down?
Use the official DeepSeek status page first. It is the best place to check uptime, incidents, and maintenance.
Official Sources & Last Verified
Last verified: April 15, 2026.
- DeepSeek official website and official web chat
- DeepSeek Platform, API docs, models & pricing, change log, and official FAQ
- App launch, R1 release, V3-0324, R1-0528, V3.1, V3.1-Terminus, V3.2-Exp, and V3.2
- Service Status and Privacy Policy
- Google Play listing and App Store listing
- Hugging Face organization, V3.2, OCR, OCR-2, and GitHub