Check status.deepseek.com — official external destination first. This page does not claim a live outage because status can change after publication. If the official status shows no incident, test the exact product—chat, login, app or API—then separate account, browser, network, DNS and regional causes.

Fast diagnostic sequence

  1. Open the official status page.
  2. Confirm the affected product and model.
  3. Note the exact error, time and timezone.
  4. Test a second browser or API client.
  5. Test another trusted network.
  6. Check account login, balance and model ID.
  7. Stop aggressive retries.
  8. Contact official support with redacted evidence.

Do not change passwords or reinstall software before knowing the failure class.

Read the official status page

DeepSeek’s page lists chat and API components and publishes incident updates. An active incident is the strongest evidence of a provider-side problem. Subscribe to official updates if the page offers that option.

A green page is not proof that every user is unaffected. Regional routing, one account, an unlisted feature or a local network can still fail. Conversely, social complaints without an official incident do not prove a global outage.

Chat does not load

Open chat.deepseek.com — official external destination directly. Try a private window. If it works, clear only DeepSeek site data in the normal browser and test extensions one at a time. Script blockers, cookie restrictions and VPN extensions can interrupt the application.

Check the device clock and browser updates. Test mobile data or another trusted network. Avoid unofficial mirrors that claim to restore access.

Login problems

Confirm whether the account uses email, Google or Apple. A password reset will not fix an account created through another identity method. Check spam for official reset mail and do not request many links at once.

If the login page loops, allow required cookies for the official domain and complete the external identity redirect in the same browser. The login guide provides a detailed, phishing-safe process.

Mobile app problems

Update from DeepSeek’s official store link, restart the app and check network permissions. If web chat works but the app does not, capture app version, operating system and error text for support.

Do not install a replacement APK from a mirror during an outage. The mobile guide explains how to verify the official app.

API failures

Check HTTP status:

  • 401: key problem
  • 402: insufficient balance
  • 400/422: invalid request or parameter
  • 429: concurrency or pacing
  • 500/503: provider error or overload

Only the last group strongly suggests a transient service issue. An obsolete model ID can also fail: current models are deepseek-v4-flash and deepseek-v4-pro. See API troubleshooting.

Timeouts and slow responses

Long thinking requests can take more time. DeepSeek documents keep-alive lines or SSE comments while requests remain open. Clients should tolerate keep-alives but enforce an overall deadline.

Reduce context, output and reasoning effort for a test request. If a small non-thinking request succeeds, the service may be available while the original workload is too slow or large.

Network, DNS and TLS

Try resolving the official hostname and connecting from another network. Corporate proxies, DNS filters and firewalls can block chat or API domains. Check proxy certificates and system time.

Never disable TLS verification to “fix” a certificate error. That exposes credentials and prompts. Ask the network administrator to inspect the approved configuration.

Regional availability

DeepSeek’s terms say services and features may vary by jurisdiction. A regional restriction is not the same as a temporary outage. Do not use an unverified bypass that could violate policy or expose account data.

Check official terms and support. Record the country and network only to the extent needed and avoid publicising personal IP details.

How to communicate an incident

Say: “DeepSeek API requests returned 503 for our service between 14:10 and 14:24 UTC; the official status page is being monitored.” Do not say “DeepSeek is down worldwide” without evidence.

Include affected component, start time, user impact and workaround. Update when official status changes. Preserve uncertainty instead of filling gaps with speculation.

Retry safely

Use exponential backoff with jitter for 429, 500 and 503. Cap attempts and queue work. A retry storm can worsen overload and increase costs. Do not automatically repeat a tool action that may already have succeeded.

For persistent failures, open a circuit breaker and provide a clear user message. Do not silently switch providers if that changes data handling or output quality without approval.

Contacting support

Provide time, timezone, endpoint, model, status code, SDK version, request ID and redacted reproduction. Remove the API key and private content. State whether the official status page showed an incident.

This publication’s contact address is for content corrections, not DeepSeek service recovery.

For expected hosted behaviour and official routes, compare the DeepSeek Chat guide. That baseline makes it easier to distinguish a missing feature from an actual connection failure.

Conclusion

“Is DeepSeek down?” has a reliable answer only at the moment of checking. Use the official status page, then isolate product, account, client and network causes. Report what is observed with a timestamp and avoid claiming a global outage from one failed request.

Useful next steps

Continue with related guidance

Put this page in context with Is DeepSeek Safe? Privacy and Security Guide, DeepSeek Chat Guide: Features, Access and Best Uses, DeepSeek Login Guide: Sign Up and Fix Access Problems, and DeepSeek API Errors and Troubleshooting. These links cover the broader decision and the closest follow-up topics without repeating this article.

Common questions

Frequently asked questions

Is DeepSeek down right now?

Use the live official status page. This static article does not freeze a current-status claim.

Why does Chat fail while the API works?

They have different components, authentication and client paths. Diagnose each separately.

Should I retry 503 errors?

Yes, briefly with exponential backoff and jitter, then fail safely.

Does 402 mean an outage?

No. It means the API account lacks sufficient balance.

Evidence

Sources

4 primary references
  1. DeepSeek Status — official external destination

    DeepSeek · official service status · verified July 30, 2026

  2. Error Codes — official external destination

    DeepSeek · official API documentation · verified July 30, 2026

  3. Rate Limit & Isolation — official external destination

    DeepSeek · official API documentation · verified July 30, 2026

  4. DeepSeek Chat — official external destination

    DeepSeek · official hosted service · verified July 30, 2026

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