How to Diagnose Claude Partial Outages & Degraded Status

Unlike major, system-wide outages that prevent you from logging in entirely, a partial outage or degraded performance window can be much harder to identify. During a partial outage, Claude might let you type a prompt, but then take minutes to respond, deliver empty outputs, fail to parse file attachments, or throw unexpected internal server errors.

Knowing how to check for and verify a partial outage helps you determine if the problem lies with your local connection, your specific account, or Anthropic’s globally distributed server clusters.

What Is a Claude Partial Outage?

During a partial outage, Anthropic’s core authentication servers might be fully operational, but specific backend clusters (such as database nodes, vector stores, or specific GPU clusters hosting Claude 3.5 Sonnet) might be offline or suffering from severe packet loss. This leads to intermittent failures, slow response times, and localized errors.

Use the following structured methods to diagnose if a partial outage is currently affecting your workspace.

Step 1: Check the Official Anthropic Status API Dashboard While the primary status page at `status.anthropic.com` is updated manually by engineers, you can often find more granular, automated telemetry on specific systems.

1. Open status.anthropic.com in your browser.
2. Do not just look at the top-level green banner. Scroll down to look at the historical uptime graphs for Claude.ai - Web App and Anthropic API separately.
3. Look for spikes in latency under the API Response Time metrics. If the response times show a steep upward curve, the system is experiencing degraded performance.
4. Check the "Past Incidents" list at the bottom of the page; partial outages are often logged there as "Investigating degraded performance" before they are escalated to a major incident.

Step 2: Use Browser Developer Tools to Spot Intermittent Gateway Failures If the status page has not yet been updated, you can inspect the raw communication between your browser and Anthropic to spot partial outages in real-time.

1. Open Claude.ai in your browser and log in.
2. Press F12 (or right-click anywhere and select Inspect) to open the developer tools.
3. Click on the Network tab and check the Fetch/XHR filter.
4. Send a simple prompt (e.g., "Hello").
5. Look for the red entries in the network log. If you see HTTP codes like 502 (Bad Gateway), 503 (Service Unavailable), or 429 (Too Many Requests) on endpoints like /v1/messages, Anthropic's backend servers are dropping your connection. This is a clear indicator of a partial outage.

Step 3: Run an Isolated "Smoke Test" Prompt Sometimes, a complex prompt triggers a localized bug or safety filter loop, making it seem like the service is down. Running a standardized "smoke test" helps rule this out.

1. Open a completely new chat window (do not use an ongoing thread).
2. Send a single-word prompt, such as: Test.
3. If Claude responds instantly to "Test" but fails on your larger prompts, the system is operational, but your specific files or instructions are overloading the active session or triggering backend parsing issues.
4. If even the word "Test" causes a loading spinner that spins for over 60 seconds, a partial API outage is highly likely.

Step 4: Compare Different Claude Models and Channels Anthropic hosts different models on different GPU clusters. If one cluster is experiencing a partial outage, others might be completely unaffected.

1. Switch Models: If you are using Claude 3.5 Sonnet and it is hanging, try switching to Claude 3 Haiku or Claude 3 Opus (if available).
2. Switch Interfaces: If the web app at claude.ai is unresponsive, open the Anthropic Console (console.anthropic.com) and test a prompt in the Workbench. The developer API often runs on isolated cloud infrastructure to guarantee business-level SLAs.
3. Switch Devices: Try sending a message via the Claude iOS or Android app using cellular data. If the mobile app on cellular works while your desktop on Wi-Fi fails, the issue is regional routing or your ISP rather than a global partial outage.

Step 5: Check Developer Communities for Real-Time Sentiment Official status pages can take 15 to 30 minutes to update during a sudden incident. Community hubs will report outages almost instantly.

1. Search for "Claude" on Downdetector and look for a sudden vertical line on the report chart.
2. Check social platform feeds (such as X/Twitter) using search queries like Claude down or Anthropic status and filter by "Latest". If you see dozens of users posting about the same error in the last 2 minutes, it is a confirmed system-wide partial outage.
3. Visit the Anthropic Discord server or developer forums to see if other engineers are reporting API timeouts and response lag.

When to escalate During a confirmed partial outage, there is nothing you can do locally to fix the issue. Anthropic’s site reliability engineering (SRE) team is likely already redeploying server clusters. If, however, the status pages are green, other users are reporting no issues, and your account remains completely unresponsive or throws errors across all devices and models, reach out to Anthropic Support with your account details and your specific geographical IP address to investigate potential routing blocks.