Is Claude down right now?
Authenticated API inference - 4 models monitored · How we classify outages
Claude is currently down - official outage reported - 43ms HTTP response. Last checked . 90-day uptime: 99.7%. Claude API: all 4 models responding - fastest TTFT 560ms.
We’ve suspended access to Claude Mythos 5 and Claude Fable 5
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HTTP uptime (90d)
99.7%
20 incidents (90d)
HTTP response now
43ms
HTTP p50 (7d)
146ms
median ping response
HTTP p95 (7d)
421ms
tail ping response
Claude API Status
Live · every 5 minBest TTFT (p50)
560ms
time to first token
Best throughput
61tok/s
output tokens/sec (24h avg)
Min success rate
99%
worst model (24h)
P50 = typical speed. P95 = worst case 95% of the time. Measured by Tickerr's independent inference checks. Requires ≥10 checks to display.
TTFT over 24 hours
ⓘ Authenticated streaming API calls via native fetch. TTFT = milliseconds from request start to first streamed token chunk. Throughput = output tokens ÷ generation time. Checks run from Vercel us-east-1. Independent of the provider's official status page.
Agent monitoring active · 2 agents reporting · Powered by Tickerr MCP
HTTP endpoint response time (7 days)
p50 146ms·p95 421msⓘ HTTP response times to Claude's status endpoint - measures infrastructure availability, not API inference speed. For TTFT and model-level API status, see the Claude API Status section above.
90-day uptime comparison
Independent monitoring catches issues faster - official pages sometimes lag by hours before acknowledging problems.
Service components
via status.anthropic.com ↗Incident history
We are currently investigating this issue.
We are currently investigating this issue.
We are currently investigating this issue.
claude-haiku-4-5 API Latency Degraded
Independent monitoring detected elevated API latency for claude-haiku-4-5. Current TTFT is 2.6× above the rolling p50 baseline (1340ms vs p50 516ms). The service is responding but slower than normal. …
We have identified the cause of the issue affecting Claude.ai and are working on a fix. We will provide an update as soon as possible.
We are currently investigating this issue.
claude-haiku-4-5 API Latency Degraded
Independent monitoring detected elevated API latency for claude-haiku-4-5. Current TTFT is 4.9× above the rolling p50 baseline (2690ms vs p50 548ms). The service is responding but slower than normal. …
claude-sonnet-4-6 API Latency Degraded
Independent monitoring detected elevated API latency for claude-sonnet-4-6. Current TTFT is 2.1× above the rolling p50 baseline (2019ms vs p50 944ms). The service is responding but slower than normal.…
We are currently investigating this issue.
We are investigating elevated errors on requests to Claude Opus 4.8. We will provide an update as soon as possible.
Opus 4.8 error rates were elevated from 12:41 PDT to approximately 12:53 PDT. The team is monitoring.
claude-haiku-4-5 API Latency Degraded
Independent monitoring detected elevated API latency for claude-haiku-4-5. Current TTFT is 9.4× above the rolling p50 baseline (6472ms vs p50 687ms). The service is responding but slower than normal. …
We are currently investigating this issue.
We are currently investigating this issue.
claude-sonnet-4-6 API Latency Degraded
Independent monitoring detected elevated API latency for claude-sonnet-4-6. Current TTFT is 4.5× above the rolling p50 baseline (4313ms vs p50 952ms). The service is responding but slower than normal.…
claude-haiku-4-5 API Latency Degraded
Independent monitoring detected elevated API latency for claude-haiku-4-5. Current TTFT is 4.2× above the rolling p50 baseline (2288ms vs p50 540ms). The service is responding but slower than normal. …
We are currently investigating this issue.
Learn more here: https://anthropic.com/news/fable-mythos-access
claude-haiku-4-5 API Latency Degraded
Independent monitoring detected elevated API latency for claude-haiku-4-5. Current TTFT is 3.4× above the rolling p50 baseline (2159ms vs p50 641ms). The service is responding but slower than normal. …
claude-sonnet-4-6 API Latency Degraded
Independent monitoring detected elevated API latency for claude-sonnet-4-6. Current TTFT is 3.1× above the rolling p50 baseline (3139ms vs p50 1012ms). The service is responding but slower than normal…
Related pages
Claude API not working? Common error codes
If Claude's API is returning errors, the table below explains what each code means and how to fix it. If errors are widespread, check the live status above - a service incident will appear there within minutes.
| Error | What it means & what to do |
|---|---|
| HTTP 429 | Rate limit hit - check your plan tier, add exponential backoff |
| HTTP 529 (overload_error) | Anthropic is overloaded - retry after 30–60 seconds |
| HTTP 500 (api_error) | Unexpected server error - retry once, then check this page |
| HTTP 503 | Service unavailable - check for active incidents below |
Note: Tickerr monitors Claude's status endpoint, not individual API calls. An HTTP 429 or 500 in your app may be specific to your account tier - check the rate limits page for plan-specific thresholds.
About Claude status
Claude is Anthropic's AI assistant and API, available in Haiku, Sonnet, and Opus tiers. This page tracks two independent signals: HTTP availability (is Anthropic's infrastructure reachable?) and live API inference (is the Claude API actually working for developers?). Tickerr makes authenticated API calls to all six Claude models - claude-haiku-4-5, claude-haiku-3-5, claude-sonnet-4-6, claude-sonnet-4, claude-opus-4-6, and claude-opus-4 - every 5 minutes, measuring TTFT (time-to-first-token) and output throughput. This catches model-layer failures that don't show up as HTTP outages, covering roughly 35% of incidents. Common Claude API errors: HTTP 529 overloaded_error (Anthropic at capacity - retry after 30–60s), HTTP 429 rate_limit_error (you've hit plan limits - check the rate limits page), HTTP 500 api_error (unexpected server error - retry once). If the Claude API is not working or returning 529 overloaded responses, check the live status above - Tickerr typically detects these within 5 minutes. Claude API latency (TTFT) typically runs 300–800ms for Haiku models and 600ms–2s for Opus under normal load. Anthropic's official status page at status.anthropic.com is updated within 15–30 minutes of a confirmed incident; Tickerr's independent inference monitoring surfaces issues faster.
You can also check the official Claude status page.