Your script just threw a 503. The chat tab spins forever. Before you blame your code, you want a straight answer: is DeepSeek actually down, or is the problem on your side? That is what a good deepseek status checker is for — a fast, authoritative read on whether the API and web chat are healthy right now, plus a record of recent incidents so you can correlate timestamps with your own logs. This guide walks through the official status page, the third-party monitors worth bookmarking, what each component covers, and a short diagnostic routine to confirm whether an outage is global, regional, or local before you open a support ticket.

The official DeepSeek status checker

DeepSeek runs its own status page on Atlassian Statuspage at status.deepseek.com. That is the canonical source — every third-party monitor scrapes it. The official status page tracks two components and shows a 90-day uptime chart, an incident history feed, and email/Slack/Teams/RSS subscription options.

The two components it monitors are:

• API 服务 (API Service) — the developer surface at api.deepseek.com, including POST /chat/completions.
• 网页对话服务 (Web Chat Service) — the consumer chat at chat.deepseek.com and the mobile apps.

As of late April 2026, the status page reports “99.95 % uptime” for the API over the trailing 90 days and “99.52 % uptime” for web chat over the same window. The web chat unsurprisingly takes more hits because it bears the brunt of consumer traffic spikes after every release announcement.

Why this matters more after the V4 launch

DeepSeek V4 Preview shipped on April 24, 2026 as two open-weight Mixture-of-Experts models: deepseek-v4-pro (1.6T total / 49B active parameters) and deepseek-v4-flash (284B / 13B active). Both ship under the MIT license with a 1,000,000-token default context and up to 384,000 output tokens. Release windows are exactly when you need a reliable status checker — the official feed logged incidents on April 20–22, 2026 around the V4 ramp.

If you are still calling the legacy IDs deepseek-chat or deepseek-reasoner, note they currently route to deepseek-v4-flash (non-thinking and thinking respectively) and will be fully retired on 2026-07-24 at 15:59 UTC. Migration is a one-line change to the model= field; base_url stays the same. For a deeper walkthrough see the DeepSeek V4 overview.

What each status colour actually means

The official page uses Atlassian Statuspage’s standard severity ladder. Every aggregator simplifies these labels into “up / warn / down / maintenance,” so it helps to know what each tier means before you decide whether to escalate.

Third-party monitors worth bookmarking

Independent monitors add user-report aggregation and faster alerting than email subscriptions to Statuspage. They are particularly useful when DeepSeek’s own page lags behind reality, which happens during regional incidents.

• IsDown — has tracked DeepSeek since August 2024, documenting “55 outages and incidents, averaging 2.9 per month” with a typical resolution time around 112 minutes.
• StatusGator — monitoring DeepSeek’s API component since January 16, 2025; routes alerts into Slack, Teams and PagerDuty with severity filtering.
• IncidentHub — aggregates the same Statuspage feed with Discord and webhook integrations.

Treat these as supplements, not replacements. The official page is the source of truth; aggregators are useful for routing and historical search.

A 60-second diagnostic routine

When DeepSeek looks broken from your machine, run through these checks in order. Most “outages” turn out to be local in under a minute.

1. Check the official status page. If either component is red, you have your answer — wait it out and stop debugging.
2. Probe the API directly with curl. A live API will return either a token stream or a structured error JSON, both of which prove the network path works.
3. Try a different network. Tether to your phone. If it works, the issue is your ISP, firewall, or VPN — not DeepSeek.
4. Try a different account or key. A 401 or 402 response means an auth or billing issue specific to your key. Open the billing console.
5. Check for regional restrictions. Some jurisdictions throttle or block DeepSeek; see DeepSeek availability by country.

A minimal Python probe against POST /chat/completions using the OpenAI SDK pattern:

from openai import OpenAI

client = OpenAI(
    base_url="https://api.deepseek.com",
    api_key="YOUR_KEY",
)

resp = client.chat.completions.create(
    model="deepseek-v4-flash",
    messages=[{"role": "user", "content": "ping"}],
    max_tokens=8,
)
print(resp.choices[0].message.content)

The API is stateless, so each request stands alone — there is no session to “reconnect” to. If this two-token call returns, the platform is up for you. The chat at chat.deepseek.com behaves differently because it maintains conversation state for the user; the API does not.

Common errors and what they actually mean

Most reports of “DeepSeek is down” are really 401, 402 or 429 responses misread as outages. The table below maps the responses you will see most often.

For the full taxonomy see DeepSeek API error codes. If you suspect rate limiting specifically, the rate limit reference lists current per-minute and per-day caps.

Setting up your own automated checks

For production workloads, a single bookmarked status page is not enough. Three additional layers are worth wiring up:

• Subscribe to the official RSS/Atom feed on status.deepseek.com — it is the lowest-latency channel direct from DeepSeek.
• Run a synthetic probe every minute from your monitoring stack (Datadog, Grafana Cloud, BetterStack, etc.) hitting POST /chat/completions with a two-token prompt. Track p95 latency and error rate as separate signals.
• Alert on your own error budget, not on DeepSeek’s. A regional partial outage that does not show on the main page can still wreck your SLOs.

For a working probe template you can copy, the DeepSeek API tester has the request shapes laid out.

Reading the incident history correctly

The Atlassian-powered incident feed lists each event with timestamps, an investigation note, and a resolution note. Around the V4 Preview launch, for example, the feed recorded entries on April 20, 21 and 22, 2026, including a Web/App Instant Mode performance issue and an API anomaly. When you correlate your own logs against the feed, line up against the “Investigating” timestamp, not the “Resolved” one — DeepSeek (like every provider) takes minutes to acknowledge problems users have already started feeling.

When the status page says “Operational” but things still feel wrong

This is the most common case in practice. A green status page does not guarantee your specific request will succeed. Possibilities to rule out:

• Long-context request hitting a soft limit. V4 supports 1M tokens by default, but very long inputs increase queue time. Drop max_tokens and shorten the prompt to test.
• Thinking mode misconfiguration. Enabling reasoning_effort="max" requires max_model_len >= 393216; otherwise responses truncate. Thinking output returns reasoning_content alongside the final content.
• JSON mode returning empty content. JSON mode is designed to return valid JSON, not guaranteed; include the word “json” and a small example schema in the prompt, and set max_tokens high enough to avoid truncation. See the JSON mode reference.
• Cache cold-start. First call against a long system prompt costs the cache-miss rate; repeats hit the cheaper cache-hit tier. See context caching.

If you are still stuck after these, the broader DeepSeek troubleshooting guide covers account- and platform-level issues that no status checker can surface.

Other tools to keep in the same bookmark folder

Outage diagnosis is one piece of operating against a third-party API. Three siblings on this site cover the rest:

• DeepSeek pricing calculator — model your monthly spend across cached input, uncached input and output buckets.
• DeepSeek token counter — estimate token usage before you call.
• DeepSeek tools and utilities — the full set of calculators and checkers we publish.

Last verified: 2026-04-25. DeepSeek AI Guide is an independent resource and is not affiliated with DeepSeek or its parent company. Model IDs, pricing and API behaviour change; check the official DeepSeek documentation and pricing page before committing to a production decision.