Independent DeepSeek AI guide · Official links clearly labeled
DeepSeek AI Guide: Official Links, Chat, App, API & Pricing
DeepSeek includes an official chat experience, mobile app, developer API platform, model releases, pricing pages, open model resources, and service status updates.
Chat-Deep.ai Helps users, developers, businesses, students, and researchers worldwide understand DeepSeek. It helps them find official sources. It lets them try browser-based AI chat. It helps them choose the right guide for each task.
Independent note: Chat-Deep.ai is an independent DeepSeek guide and browser chat access site. It is not the official DeepSeek website, official app, official API platform, billing portal, or support channel.
Official DeepSeek Links
Use official DeepSeek resources for account access, app downloads, login, API keys, pricing, platform access, developer documentation, and service status.
| Need | Official DeepSeek Source | Use It For |
|---|---|---|
| Official website | DeepSeek.com | Official DeepSeek product, company, chat, app, API, and platform entry point. |
| Official chat | chat.deepseek.com | Official hosted DeepSeek Chat experience and account-based chat access. |
| Official app | download.deepseek.com | Official app download route and safer path to official mobile app listings. |
| Official login | Chat login / Platform login | Official sign-in for chat accounts, developer access, API keys, billing, and platform settings. |
| API platform | platform.deepseek.com | Official developer platform for API access, account settings, API keys, and billing. |
| API documentation | api-docs.deepseek.com | Official API documentation, model names, technical guides, error codes, and integration notes. |
| API pricing | API docs pricing | Official token pricing, billing details, model pricing, and current API cost information. |
| Service status | status.deepseek.com | Official DeepSeek service availability, incidents, maintenance, and uptime updates. |
Important: For passwords, API keys, billing, official app downloads, account access, and official support, use DeepSeek’s official links. Use Chat-Deep.ai for independent explanations, comparisons, safety notes, pricing context, model guidance, browser chat access, and practical tutorials.
Choose Your DeepSeek Path
Pick the fastest route based on what you want to do. Each guide below is designed for a different DeepSeek search intent.
Try browser chat
Use Chat-Deep.ai’s independent browser chat page for quick AI chat access.
Open browser chatFind the official website
See the official DeepSeek website, chat, app, platform, API pricing, and status links.
View official DeepSeek linksCheck if DeepSeek is free
Understand what may be free, what is token-based, and what local use can cost.
Read the free vs paid guideUse official login safely
Learn the difference between official chat login, platform login, and browser alternatives.
Open the login guideDownload the official app
Find safer app download guidance and avoid fake DeepSeek app pages.
Read the app guideLearn how to use DeepSeek Chat
Get a practical walkthrough for web chat, mobile use, prompts, and safety basics.
Read the how-to guideGet started with the API
Learn API setup basics, model names, OpenAI-compatible usage, and developer cautions.
Open the API guideCheck API pricing
Understand token pricing, cache-hit input, cache-miss input, output tokens, and cost estimates.
View the pricing guideCompare DeepSeek models
Compare DeepSeek model families, API IDs, local options, and recommended use cases.
Compare modelsCheck service status
Use official status for official availability and Chat-Deep.ai for independent context.
Check DeepSeek statusReview safety and privacy notes
Understand privacy, data handling, sensitive prompts, hosted AI, and responsible use.
Read the safety guideCompare DeepSeek vs ChatGPT
Compare model behavior, pricing, apps, API needs, ecosystem, and privacy trade-offs.
Read the comparisonIs DeepSeek Free?
Official DeepSeek chat and app access may be free or limited. This depends on the current offer, your account status, your region, usage limits, and service availability. DeepSeek API usage is separate from normal chat or app access and is usually token-based.
Developers, teams, and businesses should verify current pricing before production use, cost estimates, billing decisions, or API deployment.
Read our Is DeepSeek AI Free? guide or check the DeepSeek pricing guide.
For US and Global Users
DeepSeek access, login, app access, API pricing, model access, and service behavior can vary by country. They can also vary by account status, official service changes, usage limits, and local rules.
US and global users should check official DeepSeek sources before entering credentials or creating API keys. Do this before handling billing, downloading apps, or using AI with sensitive data.
Businesses, schools, researchers, journalists, and public-sector teams should review privacy, compliance, data handling, data residency, and organization policies before using hosted AI services.
Last Reviewed
Last reviewed: May 14, 2026
Last updated: May 14, 2026
Sources checked: the official DeepSeek website, official chat, app download page, platform, API docs, and API pricing. We also checked the official status page, privacy policy, and terms. We checked GitHub and Hugging Face too.
Editorial note: This page is maintained according to our Editorial Policy. We prioritize official DeepSeek sources for official links, app access, login, API, pricing, and service status. We also reference Chat-Deep.ai’s independent guidance clearly separate.
What Is DeepSeek AI?
DeepSeek AI is an artificial intelligence ecosystem that includes an official chat assistant, mobile app, developer API, reasoning models, open model releases, and tools for writing, coding, document analysis, automation, and AI application development.
For everyday users, DeepSeek usually means the official DeepSeek Chat experience or mobile app. For developers, researchers, and businesses, it can also mean the DeepSeek API. It includes model choices, pricing, long-context workflows, local model tests, and production AI integrations.
“DeepSeek” can mean the company, the chat assistant, the API platform, or model families like V4 and R1. It can also mean Coder, OCR, or older V3 releases. The right path depends on what you want to do. You may want to chat or log in. You may want to download the app. You may want to create an API key. You may want to compare models or check pricing. You may want to review safety. You may want to troubleshoot availability.
DeepSeek Quick Facts
| Official website | DeepSeek.com |
|---|---|
| Official chat | chat.deepseek.com |
| API platform | platform.deepseek.com |
| Current API models | deepseek-v4-flash and deepseek-v4-pro, according to the official API documentation checked on this page’s review date. |
| Important API migration date | deepseek-chat and deepseek-reasoner are scheduled for deprecation on 2026/07/24 in the official API documentation. |
| Pricing source | Official API pricing is published in the DeepSeek API Docs and may change over time. |
| Privacy note | DeepSeek’s privacy policy says prompts, uploaded files, chat history, device/network data, and other personal data may be collected; it also states personal data may be processed and stored in China. |
Who Is Behind DeepSeek AI?
DeepSeek’s official terms say that Hangzhou DeepSeek Artificial Intelligence Co., Ltd. runs its products and open platform. DeepSeek is widely described as a China-based AI company founded in 2023.
Liang Wenfeng is widely linked to DeepSeek’s founding. He is also linked to High-Flyer, a quantitative hedge fund. High-Flyer supported DeepSeek’s early AI research. This matters because DeepSeek is not just a chatbot. It is part of a wider AI ecosystem. It includes research, model releases, APIs, open weights, and developer tools.
How Does DeepSeek AI Work?
DeepSeek models use large language models to process prompts and generate text. They can analyze code, summarize information, and solve multi-step tasks. Some releases focus on reasoning, some on speed and cost efficiency, and some on local or open-model experimentation.
- Language models: for chat, writing, code, summarization, structured output, and document analysis.
- Reasoning modes: for math, logic, planning, coding, and complex analysis.
- Efficient architectures: some DeepSeek models use MoE-style designs to support large-scale model capacity with selective activation.
For technical details, use the DeepSeek Models guide and official DeepSeek documentation.
DeepSeek Chat, App and Login
DeepSeek users may need different access paths. The official chat is for account chat access.The official app is for mobile access. The official platform is for developer accounts.It supports API keys, billing, and API usage.
Download the official DeepSeek mobile app:
Chat-Deep.ai also offers a separate browser chat page for quick AI access. However, it is not the official DeepSeek Chat service. Do not enter your official DeepSeek password on unofficial pages or lookalike domains.
DeepSeek API and Pricing
The DeepSeek API is designed for developers, apps, agents, automation, and production integrations. API usage is separate from normal chat or app access and is typically billed by token usage.
The official API documentation describes formats compatible with OpenAI and Anthropic APIs. As of this page’s review date, the official docs list deepseek-v4-flash and deepseek-v4-pro as current API model names. Older names, like deepseek-chat and deepseek-reasoner, are set for deprecation.
Pricing can change, so use the official pricing page for current rates and use Chat-Deep.ai’s pricing guide for independent explanations, token examples, cache-hit and cache-miss context, and cost-estimation guidance.
- Read the DeepSeek API guide
- View the DeepSeek pricing guide
- Open official API docs
- Open official API pricing
DeepSeek Models Explained
DeepSeek has released several model families for chat, coding, reasoning, long-context analysis, agent workflows, OCR, and multimodal research. The most important current names for most users are DeepSeek V4 Pro, DeepSeek V4 Flash, DeepSeek R1, and earlier V3/V3.2 models.
| Model or Family | Best For | Key Strengths | Limitations | Who Should Use It |
|---|---|---|---|---|
| DeepSeek V4 Pro | Advanced reasoning, coding, long-context analysis, agent workflows | DeepSeek describes V4-Pro as 1.6T total parameters with 49B active parameters, 1M context, and Thinking / Non-Thinking modes. | May cost more than Flash and may be unnecessary for simple, high-volume tasks. | Developers, researchers, advanced users, and teams testing complex AI workflows. |
| DeepSeek V4 Flash | Fast and cost-efficient AI tasks | DeepSeek describes V4-Flash as 284B total parameters with 13B active parameters, 1M context, and lower-cost API pricing. | May be weaker than Pro on the hardest reasoning, knowledge, or agent tasks. | Startups, app builders, automation tools, high-volume API users, and general assistants. |
| DeepSeek R1 | Reasoning-heavy prompts, math, logic, and code reasoning | Released as a reasoning-focused model family with open-source model and technical report materials under the MIT license. | Older than V4; current API users should check model routing and migration notices. | Researchers, developers, reasoning experiments, and open model users. |
| DeepSeek V3 / V3.2 | General language tasks, coding, reasoning, and agent-style work | V3 is a strong early general-purpose MoE model. V3.2 was announced as a reasoning-first model family built for agents. | Newer API users should verify current availability, model names, and support windows. | Users comparing model generations or maintaining older workflows. |
| DeepSeek Coder | Programming, code generation, debugging, and repository understanding | Code-focused model family useful for developer productivity and coding experiments. | Specific versions, licenses, and performance vary by release. | Developers and teams building coding tools or code-assistant workflows. |
| DeepSeek OCR / VL families | Image-text, OCR, visual document understanding, and multimodal research | Public repositories include image-text and vision-language model work. | Not all capabilities may be available in the same official chat or API product. | Researchers and developers evaluating multimodal DeepSeek model releases. |
For production use, always check the current official model names, pricing, context limits, rate limits, deployment restrictions, and licenses. Model quality can vary depending on prompts, tools, benchmarks, data sensitivity, latency requirements, and application design.
DeepSeek Use Cases
DeepSeek can be evaluated across everyday chat, developer workflows, reasoning tasks, document analysis, business automation, and local AI experiments. The examples below are starting points, not guarantees. Always verify important outputs before relying on them.
Coding
Review pull requests, explain errors, generate tests, refactor functions, document code, and plan migrations.
Math and reasoning
Work through structured problems, compare solution paths, test assumptions, and verify steps.
Research
Summarize source material, organize notes, draft outlines, compare claims, and identify facts to verify.
Writing
Draft emails, rewrite documentation, create briefs, improve clarity, and adjust tone for audiences.
Summarization
Condense meetings, articles, support tickets, reports, and long documents into action points.
Document analysis
Extract requirements, compare sections, find contradictions, and prepare review checklists.
Agentic workflows
Plan tasks, call tools, inspect codebases, coordinate workflows, and test guarded automation prototypes.
Business and support
Draft support replies, classify requests, summarize customer issues, and prepare knowledge-base content.
Local experimentation
Test open-weight models, quantized variants, offline inference setups, and private evaluation workflows.
Safety note: Do not paste passwords, API keys, or private documents into AI tools. Do not paste customer data, legal or medical secrets, financial records, or confidential business information. Only do this if your organization has approved the use case.
For more examples, read our DeepSeek Use Cases guide or explore our DeepSeek Prompt Guide.
DeepSeek Status and Troubleshooting
For official service availability, use the official DeepSeek status page. For independent context, Chat-Deep.ai’s A status page helps users tell official status updates apart from independent checks. It also helps them rule out common issues, like browser, network, login, or API problems.
If DeepSeek Chat, the official app, login, or API requests fail, check the official status first. Then review browser, app, network, balance, API key, request format, and rate limits.
Is DeepSeek Safe? Privacy, Accuracy and Limits
DeepSeek can be useful, but users should treat it like any powerful AI tool: helpful, but not risk-free. Safety depends on whether you use official chat, the official app, the API, local models, or third-party tools.
- Protect sensitive data: do not paste passwords, API keys, legal or medical secrets, financial records, customer data, or confidential business information unless the use case is approved.
- Verify important outputs: AI answers can be wrong, incomplete, outdated, or unsuitable for professional decisions.
- Review privacy and data residency: check official privacy terms before using hosted services with personal or regulated data.
- Check status before production use: build fallbacks for outages, degraded performance, latency, and API errors.
- Watch model and pricing changes: model names, API behavior, pricing, and service limits can change over time.
Read our DeepSeek safety guide, Security guidance, Privacy Policy, Editorial Policy, and DeepSeek for Business.
DeepSeek vs ChatGPT
DeepSeek and ChatGPT serve overlapping but different needs. The best choice depends on your task, app goals, and budget. It also depends on model behavior, API needs, local setup, privacy needs, and current tools.
DeepSeek may be attractive for cost-sensitive API evaluation, reasoning workflows, long-context tests, and open model research. ChatGPT may be a better fit when you want a polished, general-purpose assistant. It also offers mature workspace features and a broader product ecosystem.
Latest DeepSeek Updates
DeepSeek updates can affect model names, API pricing, status, app availability, official documentation, model releases, and safety guidance. Time-sensitive information should be checked against official sources before account, billing, developer, or production decisions.
- API model names: verify current names and migration notices in the official API documentation.
- Model updates: review V4, R1, OCR, and local model pages for current model context.
- Pricing: check official API pricing.
- Status: check official service status before troubleshooting access or production issues.
- News and company context: treat funding, valuation, regulation, and roadmap updates as time-sensitive.
Read DeepSeek news, compare DeepSeek models, review the API guide, check pricing context, or open status troubleshooting.
Popular DeepSeek Guides
Official DeepSeek Links
Find official website, chat, app, login, API platform, pricing, and status links.
Open official links guideIs DeepSeek Free?
Understand free chat/app access, paid API usage, and local model costs.
Read free vs paid guideHow to Use DeepSeek Chat
Learn web, mobile, prompt, privacy, and API basics for DeepSeek Chat users.
Read how-to guideDeepSeek Login Guide
Use official login paths safely and avoid fake sign-in pages.
Read login guideDeepSeek App Guide
Find safer app download guidance and avoid unofficial app risks.
Read app guideDeepSeek API Guide
Learn API setup, model IDs, code examples, and production cautions.
Read API guideDeepSeek Pricing Guide
Understand token pricing, cache-hit and cache-miss input, and API cost estimates.
Read pricing guideDeepSeek Models
Compare model families, reasoning models, OCR, local options, and API choices.
View modelsIs DeepSeek Safe?
Review privacy, security, data handling, and responsible AI use.
Read safety guideDeepSeek vs ChatGPT
Compare tasks, pricing, API needs, app experience, and local deployment factors.
Read comparisonFAQ
What is the official DeepSeek website?
The official DeepSeek website is DeepSeek.com. Use it to reach official DeepSeek product, chat, app, platform, API pricing, and status links.
Is DeepSeek free?
Official DeepSeek chat and app access may be free or limited depending on current official terms, account status, region, usage limits, and service availability. DeepSeek API usage is separate and usually token-based.
Where do I log in to DeepSeek?
Use chat.deepseek.com for official chat login and platform.deepseek.com for official developer platform access. For safety notes, read the DeepSeek Login guide.
Where do I get a DeepSeek API key?
Get official API keys from the official DeepSeek Platform. Do not enter API keys into random tools, lookalike sites, or frontend code.
Where can I check DeepSeek pricing?
Use the official DeepSeek API pricing page for current rates and the Chat-Deep.ai pricing guide for independent explanations, examples, and cost context.
Where can I check if DeepSeek is down?
Use the official DeepSeek status page for official service availability. You can also review Chat-Deep.ai’s status page for independent context and troubleshooting links.
Is DeepSeek safe to use?
Safety depends on how you use it. Avoid sharing credentials, API keys, private documents, legal or medical secrets, financial records, customer data, or confidential business information without proper review and controls.
Can I use Chat-Deep.ai without a DeepSeek account?
Chat-Deep.ai provides independent browser chat access for normal use, but it is not the official DeepSeek Chat service. For official DeepSeek accounts, use official DeepSeek links.
What should I do before using DeepSeek for business or sensitive work?
Review official terms, privacy policies, data handling rules, security requirements, compliance obligations, and your organization’s AI policy. For production API use, verify official pricing, status, model IDs, and documentation.