DeepSeek Official Entry and Signup Guide

Last updated：2026-08-12· 15 min read

🚀 Quick access

DeepSeek Domestic：Open entry↗
DeepSeek Mirror：Open mirror↗
Official DeepSeek：chat.deepseek.com ↗

Updated: 2026-08-12. Signup methods, regions, and button labels change—follow the live official UI.

Overview

DeepSeek’s product site is https://www.deepseek.com/; official web chat is https://chat.deepseek.com/. Because signup rules move, this guide teaches a durable workflow: verify the domain → register on the current page → harden security → run a first chat → separate chat billing from API. If the official chat is temporarily unreachable, use the China access guide for convenience entries—but do not type your intended official password into a third-party site (account systems usually differ).

What this guide solves

A table of official domains vs domestic/mirror entries
Prep that reduces verification failures and risk checks
Step-by-step signup, login, security review, and first high-quality chat
Fixes for blank pages, missing codes, and suspicious-activity prompts
A completion checklist so “registered” means more than “can open a tab”

Recognize the real official entry

Bookmark by typing the address yourself. Do not trust search ads, lookalike domains, or pages that demand unknown installers.

Entry	Purpose	Notes
`www.deepseek.com`	Product info and announcements	Prefer for version claims
`chat.deepseek.com`	Official web chat	Primary signup/login surface
`api-docs.deepseek.com`	API reference	Developers; not a full chat UI
Domestic V4 entry	Convenience	Third-party; separate privacy review
Mirror studio	Multi-model workspace	Third-party; verify model IDs

Check spelling, HTTPS, and certificates. Do not install mystery “login helpers.” Product site, chat, and API docs serve different jobs—do not hunt for API keys inside the chat UI or expect a full messenger inside the docs.

A long-lived email (or phone / SSO options the page currently offers) that you control
A unique strong password from a password manager
Stable browser, device, and network during verification; rapid network hopping and code spam can trigger checks
Do not buy pre-made accounts—you cannot verify ownership or history
If the page says your region or method is unsupported: follow the rules; daily experiments can move to the domestic entry, which is a different stack

Type https://chat.deepseek.com/ and confirm HTTPS + spelling.
Choose Sign up / Log in and continue with whatever the current page offers (email, phone, or third-party).
Open the verification email; check spam before requesting dozens of resends.
Complete required confirmations with accurate, allowed information; never hand codes to “signup agents.”
After login, open settings: models, history, and data-related notes.
Start a new chat with a privacy-safe test prompt; confirm send, reply, and history.
On shared devices, log out; closing a tab is not logout.

Copy-ready test prompt:

You are a careful study assistant. Explain in English why language models hallucinate:
1) A conclusion in ≤100 words
2) One everyday analogy
3) Three verification methods
4) Explicitly mark uncertainties
Do not invent paper titles or URLs.

Second prompt (format compliance):

Turn this goal into a 7-day plan.
Goal: Finish a 300-page professional book and take notes
Constraint: ≤45 minutes per day
Output: daily page targets, note tasks, one buffer day, and a done definition.
If information is missing, ask at most two questions first.

Being able to chat is not the finish line:

Find log out, sign out everywhere, and password change (labels vary)
Enable available 2FA / passkeys early
Ensure the browser did not save the password on a lookalike domain
On shared PCs, always log out
Conversation boundaries: no API keys, cards, ID numbers, customer lists, unpublished source, or internal contracts; de-identify business excerpts first

Official chat vs API billing (separate ledgers)

Item	Typical shape	Where to look
Official web chat	Free tier and/or in-product upgrades	Model picker and account notes after login
API	Usually usage-based	Billing + model list in docs/console
Domestic mirrors	Their own quotas/pricing	That site’s text—not official invoices

Do not assume heavy web use creates API credit, and do not trust shady “official top-up” sellers. Before paying, verify domain, merchant, and billing cycle. Model names and prices follow live API docs.

Blank page or endless challenges

Disable extensions that rewrite requests; try a private window; clear cookies for that site only. Fix system clock skew; avoid frantic network switching. If official chat stays unreachable, use options in the China access guide for daily work while watching official announcements.

Missing email or SMS codes

Check spelling, spam, corporate filters, and country codes; wait, then resend once. Allowlist the sender. Prefer another long-lived mailbox over disposable addresses.

Logged in but missing a model or feature

Rollouts depend on account, region, and product cadence. Relogging does not guarantee access. Trust the visible list and official posts—not third-party screenshots of “your” entitlements.

Suspicious activity or repeated failures

Change the password, secure the email inbox, and stop high-frequency retries. Never share full codes or recovery secrets. Official support will not ask for your password.

Mirror account cannot log into the official site

Expected. Different operators and account stores—register on the official site and keep two password vaults separate.

Registration completion checklist

Address bar stays on official DeepSeek hosts; no silent redirect to clones
You control the email/phone; password is not reused elsewhere
Available security options reviewed (2FA, etc.)
Web chat vs API billing understood as separate
First test chat contains no personal or company secrets
Official URLs bookmarked manually
If you also use mirrors, you read their privacy terms and did not reuse the official password

Access

Official chat: chat.deepseek.com
Product site: www.deepseek.com
API docs: api-docs.deepseek.com
Domestic convenience: DeepSeek V4
Mirror studio: AI Chat Studio

Official routes fit people who want the full account system and citable product claims. Domestic entries fit early validation. Third parties are separate operators for passwords, payments, and privacy.

FAQ

Is a phone number always required?

Not necessarily. Available methods (email, phone, SSO) change with the UI—follow what you see today.

Usually they are separate products and meters. Confirm in account centers and docs; do not assume they share balance.

I forgot my password—what now?

Use only the official recovery flow. Do not send codes to strangers or “DM support” accounts.

Should chat history store sensitive material?

No. Use minimum necessary input and follow org policy. Archive important conclusions locally.

Can I use DeepSeek without registering?

Some periods or entries may offer limited guest use; history and full features usually need an account. For a quick trial you can also try the domestic entry with the same privacy caution.

Official resources

Next reading

Action path

Now: type chat.deepseek.com, bookmark it, finish verification, and run a de-identified first chat.
After login: review security options; separate web chat from API.
This week: decide whether to go deeper into prompting, R1 reasoning, or the API, and write “no sensitive uploads” into your personal checklist.