Is Claude API Down? Anthropic Status and Error Checks

What this page can check

Check whether a Claude or Anthropic API failure looks like provider overload, network reset, invalid auth, or an application-side retry problem.

Official provider status page: https://status.anthropic.com/

Historical public endpoint uptime

llmping samples provider public endpoints and official status feeds every 5 minutes through a Cloudflare Worker. These percentages never use user API keys and should be read as public reachability evidence, not a guarantee for every authenticated workload. The latest check time appears with the data; if it is more than 15 minutes old, treat the panel as historical rather than current.

Immediate checks

1. 529 overloaded_error points to provider capacity pressure.
2. ECONNRESET is a transport failure and can come from proxies or serverless timeouts.
3. 401/403 class errors are normally account, key, or permission issues.
4. Compare one short request against one streaming request before blaming the provider.

cURL test command

curl -i https://api.anthropic.com/v1/messages \
  -H "x-api-key: $ANTHROPIC_API_KEY" \
  -H "anthropic-version: 2023-06-01" \
  -H "content-type: application/json" \
  -d '{"model":"claude-3-5-haiku-latest","max_tokens":16,"messages":[{"role":"user","content":"ping"}]}'

Run this from your own terminal or server. A status code is only useful after you know whether auth, quota, or endpoint selection is correct.

Run diagnosis

Related errors

• /errors/anthropic/529/
• /errors/claude/econnreset/
• /errors/openai/429/

Markdown version