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
Official DeepSeek links for chat, app downloads, login, API access, pricing, status, open model resources, and privacy review.
| Need | Official source | Use it for |
|---|---|---|
| Official website | DeepSeek.com | Official DeepSeek product, company, chat, app, API, platform, research, legal, and service entry point. |
| Official chat | DeepSeek Chat | Official hosted DeepSeek Chat experience and account-based chat access. |
| Official app | DeepSeek app download page | Official app download route and safer path to DeepSeek mobile app listings. |
| Official login | Chat login / Platform login | Official sign-in for hosted chat accounts, developer access, API keys, billing, and platform settings. |
| API platform | DeepSeek Platform | Official developer platform for API access, account settings, API keys, billing, and usage management. |
| API documentation | DeepSeek API Docs | Official API documentation, current model names, API formats, technical guides, error codes, rate limits, and integration notes. |
| API pricing | DeepSeek API pricing | Official token pricing, cache-hit and cache-miss input costs, output token costs, model pricing, billing notes, and current API cost information. |
| Open model resources | DeepSeek on Hugging Face | Verified DeepSeek model repositories and open-weight resources for developers and researchers. Open-weight use is different from hosted chat and requires license, infrastructure, security, and compliance review. |
| Service status | DeepSeek service status | Official DeepSeek service availability, incidents, maintenance, uptime updates, and operational status checks. |
| Privacy policy | DeepSeek Privacy Policy | Official privacy terms for DeepSeek apps, websites, software, hosted services, personal data, prompts, uploaded files, chat history, and data handling. |
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.
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.
Read the full What Is DeepSeek guide.
Key DeepSeek features and use cases
AI chat and writing help
Use DeepSeek to brainstorm ideas, rewrite drafts, create outlines, summarize notes and turn rough instructions into clearer text.
Reasoning and problem solving
Reasoning modes can help break down complex questions, compare options and show a structured path toward an answer.
Coding and debugging
DeepSeek can explain code, find likely bugs, suggest refactors, generate tests and help document technical decisions.
Long-context workflows
Long-context model options may help with larger pasted documents, specifications, research notes and multi-step planning.
API access for developers
The DeepSeek API can support chat completions, app prototypes, coding assistants, agent workflows and internal productivity tools.
Open-weight and local considerations
Open-weight models can be useful for technical evaluation, but they require careful review of license terms, hardware, security and maintenance.
DeepSeek Quick Facts
| Official website | DeepSeek.com |
|---|---|
| Official chat | chat.deepseek.com |
| Official app | DeepSeek official app download page |
| API platform | platform.deepseek.com |
| API documentation | Official DeepSeek API documentation |
| Current API models |
The official API documentation lists deepseek-v4-flash and deepseek-v4-pro as current API model names as of this page’s review date.
|
| Important API migration date |
The legacy API model names 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 pricing docs and may change over time. For independent explanations, token examples, cache-hit and cache-miss context, read the Chat-Deep.ai DeepSeek pricing guide. |
| Open model resources | DeepSeek on Hugging Face provides official model repositories and open-weight resources for developers and researchers. Open-weight use is different from hosted chat and requires license, infrastructure, security, and compliance review. |
| Privacy note | DeepSeek’s official 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. Read our DeepSeek Privacy & Security Center before using DeepSeek with sensitive, business, customer, or regulated data. |
Choose Your DeepSeek Path
Choose the right DeepSeek route for your intent: official access, independent browser chat, app downloads, login, free access, API setup, pricing, models, status, privacy, or comparison guides.
Find official DeepSeek links
Use this path for the official DeepSeek website, hosted chat, app download page, login pages, API platform, pricing docs, and service status.
Try independent browser chat
Use Chat-Deep.ai’s independent browser chat page for quick AI chat access. It is separate from the official DeepSeek Chat service.
Learn how to use DeepSeek Chat
Start with practical chat guidance, better prompts, context tips, output checks, and safety basics for everyday DeepSeek use.
Download the official DeepSeek app
Find safer app download guidance, official app routes, mobile access notes, and warnings about fake or lookalike DeepSeek app pages.
Use DeepSeek login safely
Understand official DeepSeek Chat login, platform login, API key access, billing settings, and the difference between official and independent browser pages.
Check if DeepSeek is free
Understand free hosted chat or app access, usage limits, token-based API billing, local model costs, and when paid usage may apply.
Get started with the DeepSeek API
Review API setup basics, current model IDs, compatible formats, API keys, authentication, testing, rate limits, and production cautions.
Check DeepSeek API pricing
Estimate token costs, cache-hit input, cache-miss input, output tokens, cost controls, and budget planning before building.
Compare DeepSeek models
Compare DeepSeek V4 Pro, V4 Flash, R1, V3, Coder, OCR, open-weight options, API IDs, and recommended use cases.
Check status and troubleshooting
Check official service availability, then troubleshoot browser, network, login, app, API key, account balance, request format, or rate-limit issues.
Review privacy and security
Understand DeepSeek privacy risks, data residency, sensitive prompts, API key safety, hosted AI limits, and responsible use.
Compare DeepSeek vs ChatGPT
Compare DeepSeek and ChatGPT for chat quality, coding, API use, pricing, apps, ecosystem, privacy, and workflow fit.
Is 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 hosted 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.
Last Reviewed
Last reviewed: May 23, 2026
Last updated: May 23, 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.
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.
DeepSeek Chat, App and Login Safety
DeepSeek users may need different access paths. Use the official chat for account-based chat access, the official app route for mobile access, and the official platform for developer accounts, API keys, billing, and API usage. Chat-Deep.ai also offers independent browser chat access, but it is not the official DeepSeek Chat service.
Download the official DeepSeek mobile app only from DeepSeek’s official app page or trusted app store listings. Check the developer or publisher name before installing, avoid clone apps, unofficial APK mirrors, and suspicious download pages, and do not enter passwords, API keys, financial information, or confidential work data into unknown apps.
Login safety: Do not enter your official DeepSeek password on unofficial pages, lookalike domains, browser tools, or third-party apps. For official account access, app downloads, platform login, API keys, and billing, use official DeepSeek links.
Download the official DeepSeek mobile app:
Open the official DeepSeek app download page
- Use Chat-Deep.ai browser chat
- Learn how to use DeepSeek Chat
- Read the DeepSeek App guide
- Read the DeepSeek Login guide
- Open the DeepSeek official links guide
DeepSeek API and Pricing
The DeepSeek API is designed for developers, apps, agents, automation, internal tools, and production integrations. API usage is separate from hosted DeepSeek chat or app access and is typically billed by token usage rather than by the same access limits used in the hosted chat experience.
The official DeepSeek API documentation describes API formats compatible with OpenAI and Anthropic-style requests. As of this page’s review date, the official docs list deepseek-v4-flash and deepseek-v4-pro as current API model names. The legacy names deepseek-chat and deepseek-reasoner are scheduled for deprecation on 2026/07/24, so developers should check the latest migration notes before building, updating, or deploying production workflows.
DeepSeek API pricing is token-based and can change. The official pricing page lists prices per 1M tokens and separates input, output, cache-hit input, and cache-miss input costs. Use the official pricing page for current rates, and use Chat-Deep.ai’s pricing guide for independent explanations, token examples, cache context, and cost-estimation guidance.
Before using the DeepSeek API
- Review the latest official API documentation before building, testing, or deploying.
- Confirm current model names, migration notes, pricing, context limits, rate limits, and token costs.
- Get API keys only from the official DeepSeek Platform and keep them server-side.
- Avoid exposing API keys in browser code, frontend apps, public repositories, logs, screenshots, or third-party tools you do not trust.
- Avoid sending secrets, credentials, customer data, private documents, internal files, or sensitive personal information unless your policy allows it.
- Test with non-sensitive data first before connecting production users, customer records, internal documents, or paid workflows.
- Monitor token usage, latency, errors, cache behavior, rate limits, and monthly spend before scaling.
- Add logging, cost controls, fallback behavior, abuse controls, and clear data-handling rules for production apps.
- Review privacy, retention, compliance, and security requirements before using DeepSeek in business, customer, legal, medical, financial, school, or government workflows. For deeper guidance, use the DeepSeek Privacy & Security Center.
Read the DeepSeek API guide · View the DeepSeek pricing guide · Open official DeepSeek API docs · Open official DeepSeek 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.
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.
Practical DeepSeek use cases by task
After reviewing DeepSeek’s main features, use the examples below to match DeepSeek with specific tasks such as coding, research, writing, summarization, document review, business support, agent workflows, and local model experiments. These examples are starting points, not guarantees, so important outputs should always be checked.
Coding
Use DeepSeek to explain errors, review code snippets, generate tests, refactor functions, document logic, and plan migrations. For production code, always test the output and review security risks.
Math and reasoning
Use DeepSeek to compare solution paths, test assumptions, break down complex problems, and check intermediate steps before trusting the final answer.
Research
Use DeepSeek to summarize source material, organize notes, draft outlines, compare claims, and create a verification checklist before citing or publishing information.
Writing
Use DeepSeek to draft emails, rewrite documentation, create briefs, improve clarity, adjust tone, and turn rough notes into structured content.
Summarization
Use DeepSeek to condense meetings, articles, support tickets, reports, and long documents into key points, action items, risks, and follow-up questions.
Document analysis
Use DeepSeek to extract requirements, compare sections, find contradictions, prepare review checklists, and identify missing information in pasted documents.
Agentic workflows
Use DeepSeek to plan multi-step tasks, draft tool instructions, inspect codebases, coordinate workflows, and test guarded automation prototypes before deployment.
Business and support
Use DeepSeek to draft support replies, classify requests, summarize customer issues, prepare knowledge-base content, and create internal process notes.
Local experimentation
Use open-weight or local model options for technical evaluation, offline inference tests, quantized variants, and private workflow experiments when your team can manage hardware, security, and maintenance.
Safety note: Do not paste passwords, API keys, private documents, customer data, legal or medical secrets, financial records, or confidential business information into AI tools unless your organization has approved the use case.
For more examples, read our DeepSeek Use Cases guide or explore our DeepSeek Prompt Guide.
Is DeepSeek Safe? Privacy, Accuracy and Limits
DeepSeek can be useful for chat, coding, research, document analysis, and API workflows, but safe use depends on what you share, where you access it, and how carefully you verify the output. Do not treat every DeepSeek access path the same: the official chat, mobile app, API, local or open-weight models, and third-party tools can each involve different privacy, logging, storage, security, and governance considerations.
Protect sensitive data
Do not paste passwords, API keys, private documents, legal or medical secrets, financial records, customer data, confidential business information, or sensitive personal data unless the use case is approved.
Review privacy and data residency
Before using hosted DeepSeek services with personal, business, customer, or regulated data, check the latest privacy terms, data residency statements, and your organization’s data-handling rules.
Verify important outputs
AI answers can be wrong, incomplete, outdated, or unsuitable for professional decisions. Check important claims, code, calculations, recommendations, and business decisions before acting.
Use team rules for work
Teams should define allowed data types, review standards, record keeping, security checks, approval rules, and who can authorize new AI workflows.
Protect API keys
For API workflows, keep keys server-side, avoid exposing them in browser code, monitor usage, set cost controls, and build fallbacks for latency, outages, rate limits, and model changes.
Consider local or private options
For sensitive or regulated workflows, consider approved enterprise, private, or local deployment options that match your security, compliance, logging, and governance requirements.
Privacy note: Before using DeepSeek with personal, business, customer, legal, medical, financial, school, government, or confidential data, review the official privacy terms and your organization’s AI policy. Hosted DeepSeek use may involve collection or processing of prompts, uploaded files, chat history, device and network data, and other personal data, while local or self-hosted workflows may offer more infrastructure control but require technical expertise, access controls, monitoring, retention rules, and compliance review.
For a deeper breakdown, start with our DeepSeek Privacy & Security Center. You can also read the DeepSeek safety guide, the DeepSeek privacy policy explanation, the DeepSeek data residency guide, and the what not to paste into DeepSeek checklist.
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.
Read the DeepSeek vs ChatGPT comparison.
Latest DeepSeek Updates
DeepSeek updates can affect model names, API pricing, service availability, app access, official documentation, model releases, and production workflows. Always verify time-sensitive information against official sources before account, billing, developer, or production decisions.
- April 24, 2026: DeepSeek API documentation announced support for
deepseek-v4-proanddeepseek-v4-flash. - July 24, 2026: The legacy API model names
deepseek-chatanddeepseek-reasonerare scheduled for deprecation according to the official API documentation. - Pricing: DeepSeek API pricing is token-based and can change, so developers should check official pricing before production use.
- Status: Check official service status before troubleshooting access, login, app, or API issues.
Read DeepSeek news, compare DeepSeek models, review the DeepSeek API guide, check DeepSeek pricing context, or open DeepSeek status troubleshooting.
DeepSeek FAQ
Quick answers about official DeepSeek links, chat, app access, login, API keys, pricing, models, safety, privacy, and Chat-Deep.ai’s independent browser chat.
What is the official DeepSeek website?
The official DeepSeek website is DeepSeek.com. Use official DeepSeek links for account access, hosted chat, app downloads, developer platform access, API documentation, pricing, and service status.
Is DeepSeek free?
Official DeepSeek chat or 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 from hosted chat access and is usually token-based.
For more context, read our DeepSeek free vs paid guide.
Where do I log in to DeepSeek?
Use chat.deepseek.com for official DeepSeek Chat login and platform.deepseek.com for official developer platform access, API keys, billing, and account settings.
For safer account access guidance, read the DeepSeek Login guide.
Where do I get a DeepSeek API key?
Get official DeepSeek API keys from the official DeepSeek Platform. Do not enter API keys into random tools, lookalike sites, browser-only frontend code, public repositories, or third-party pages you do not trust.
For setup guidance, read our DeepSeek API guide.
Where can I check DeepSeek pricing?
Use the official DeepSeek API pricing page for current token rates, model pricing, and billing details. You can also use our DeepSeek pricing guide for independent explanations, cache-hit and cache-miss context, examples, and cost-planning notes.
Where can I check if DeepSeek is down?
Use the official DeepSeek status page for official service availability, incidents, maintenance, and uptime updates. You can also review Chat-Deep.ai’s DeepSeek status page for independent context and troubleshooting links.
Is DeepSeek safe to use?
DeepSeek can be useful, but safe use depends on what you share, which access path you use, and how carefully you verify the output. Avoid sharing passwords, API keys, private documents, legal or medical secrets, financial records, customer data, confidential business information, or sensitive personal data unless your use case is approved.
For a deeper breakdown, start with the DeepSeek Privacy & Security Center or read the DeepSeek safety guide.
Can I use Chat-Deep.ai without a DeepSeek account?
Chat-Deep.ai provides independent browser chat access for normal AI chat use, but it is not the official DeepSeek Chat service, official app, official API platform, billing portal, or support channel. For official DeepSeek accounts, passwords, API keys, billing, and platform settings, use official DeepSeek links.
You can try the independent browser page here: Chat-Deep.ai browser chat.
Can I use DeepSeek for business or sensitive work?
Do not use DeepSeek with confidential business data, customer records, financial files, legal documents, medical information, internal reports, credentials, or regulated data unless your organization has approved the workflow. Teams should review privacy terms, data handling rules, security requirements, compliance obligations, logging, retention, and approval standards first.
For team use, review the DeepSeek Privacy & Security Center and the DeepSeek data privacy checklist.
Is DeepSeek open source?
Some DeepSeek model repositories and weights are available as open-weight resources, but using open-weight models is different from using the hosted DeepSeek chat, app, or API. Review the model page, license terms, hardware needs, security controls, and maintenance requirements before using or deploying them.
For model comparisons, see our DeepSeek models guide.
What is DeepSeek V4?
DeepSeek V4 is a newer DeepSeek model family associated with V4-Pro and V4-Flash options. Model names, API mappings, pricing, context limits, rate limits, and availability can change, so developers should check the latest official API documentation before building or migrating production workflows.
Read more in our DeepSeek models comparison or the DeepSeek API guide.
Is DeepSeek restricted on work, school, or government devices?
DeepSeek is not necessarily restricted for every personal user, but some workplaces, schools, public-sector organizations, and government-managed devices may block or restrict access to AI tools. Check your organization’s AI, security, procurement, and data-handling policies before installing DeepSeek or using it with work, school, government, customer, legal, financial, health, or confidential data.
For privacy and device-use considerations, start with our DeepSeek Privacy & Security Center.
How does DeepSeek compare with ChatGPT?
DeepSeek and ChatGPT are separate AI platforms. They may support similar tasks such as chat, writing, coding, reasoning, summarization, and API workflows, but they differ in model ecosystem, pricing, integrations, privacy approach, app experience, and developer tools.
For a full breakdown, read the DeepSeek vs ChatGPT comparison.