What is Anthropic api.anthropic.com status right now?

Anthropic api.anthropic.com is operational. Check Anthropic api.anthropic.com service health and outages at the top of this page for real-time updates.

When was the last Anthropic api.anthropic.com outage?

The last Anthropic api.anthropic.com outage was on January 23, 2026: "Elevated errors: Invalid `signature` in `thinking` block"

How do I check if Anthropic api.anthropic.com is down?

Use IsDown to monitor Anthropic api.anthropic.com status and get alerts when Anthropic api.anthropic.com is down. You can also check the official Anthropic status page.

How do I get alerts when Anthropic api.anthropic.com is down?

Create an IsDown account to monitor Anthropic api.anthropic.com status. Get instant alerts via Slack, PagerDuty, or email when Anthropic api.anthropic.com outages occur.

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Anthropic api.anthropic.com status. Is Anthropic api.anthropic.com down right now?

Q: Is Anthropic api.anthropic.com down today?

Anthropic api.anthropic.com had 3 outages in the last 24 hours. IsDown monitors Anthropic status continuously for outages and service health issues.

Anthropic status updated 1 minute 56 seconds ago

Is Anthropic api.anthropic.com down?

Anthropic api.anthropic.com is working normally

IsDown last checked Anthropic api.anthropic.com status on January 23, 2026 at 09:15 AM UTC. We've received 0 user reports in the past 24 hours.

Monitoring since Jun 2024 · 360 incidents caught · 5 components tracked in real-time

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Anthropic api.anthropic.com service health over the last 24 hours

This chart shows the number of user-reported issues for Anthropic api.anthropic.com service health over the past 24 hours, grouped into 20-minute intervals. It's normal to see occasional reports, which may be due to individual user issues rather than a broader problem.

api.anthropic.com Outage Map

Anthropic outage map showing where users report when Anthropic is down

See where users report Anthropic api.anthropic.com is down. The map shows recent Anthropic api.anthropic.com outages from around the world.

api.anthropic.com Outage Map

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Downtime health for the last 90 days

In the last 90 days, Anthropic had 73 incidents (22 major outages and 51 minor incidents) with a median duration of 1 hour 9 minutes.

Total

Incidents

Critical

Major Outages

Warning

Minor Incidents

Duration

1 hour

Median Resolution

Latest Anthropic api.anthropic.com outages detected by IsDown

Check Anthropic api.anthropic.com status history below. IsDown detects when Anthropic api.anthropic.com is down, tracking both official outages and user-reported issues.

about 3 hours

Elevated errors: Invalid `signature` in `thinking` block

Jan 23, 2026 at 05:09 AM

4 minutes

Elevated error rates on claude.ai and API

Jan 22, 2026 at 10:23 PM

7 minutes

Elevated error rates on claude.ai and API

Jan 22, 2026 at 10:19 PM

about 1 hour

Elevated errors on Claude Sonnet 4.5

Jan 21, 2026 at 02:47 PM

about 1 hour

Elevated errors on Claude Sonnet 4.5

Jan 21, 2026 at 02:44 PM

about 1 hour

Elevated errors on Claude Opus 4.5 and Sonnet 4.5

Jan 20, 2026 at 04:43 PM

about 1 hour

Elevated errors on Claude Opus 4.5 and Sonnet 4.5

Jan 20, 2026 at 04:41 PM

about 6 hours

Elevated error rates on Opus 4.5 and Sonnet 4.5

Jan 14, 2026 at 08:34 AM

about 6 hours

Elevated error rates on Opus 4.5 and Sonnet 4.5

Jan 14, 2026 at 08:34 AM

24 minutes

Increased rate of errors for Opus 4.5

Jan 13, 2026 at 07:28 AM

Title	Started At	Duration
Elevated errors: Invalid `signature` in `thinking` block The issue has been identified and fix is being implemented.	Jan 23, 2026 at 05:09 AM UTC	about 3 hours
Elevated error rates on claude.ai and API We are currently investigating this issue.	Jan 22, 2026 at 10:23 PM UTC	4 minutes
Elevated error rates on claude.ai and API We are currently investigating this issue.	Jan 22, 2026 at 10:19 PM UTC	7 minutes
Elevated errors on Claude Sonnet 4.5 We are currently investigating this issue.	Jan 21, 2026 at 02:47 PM UTC	about 1 hour
Elevated errors on Claude Sonnet 4.5 We are currently investigating this issue.	Jan 21, 2026 at 02:44 PM UTC	about 1 hour
Elevated errors on Claude Opus 4.5 and Sonnet 4.5 We are currently investigating this issue.	Jan 20, 2026 at 04:43 PM UTC	about 1 hour
Elevated errors on Claude Opus 4.5 and Sonnet 4.5 We are currently investigating this issue.	Jan 20, 2026 at 04:41 PM UTC	about 1 hour
Elevated error rates on Opus 4.5 and Sonnet 4.5 We are currently investigating this issue.	Jan 14, 2026 at 08:34 AM UTC	about 6 hours
Elevated error rates on Opus 4.5 and Sonnet 4.5 We are currently investigating this issue.	Jan 14, 2026 at 08:34 AM UTC	about 6 hours
Increased rate of errors for Opus 4.5 We are currently investigating this issue.	Jan 13, 2026 at 07:28 AM UTC	24 minutes

Get alerts when Anthropic api.anthropic.com is down

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Get instant alerts when outages are detected
Be the first to know if service is down
Show real-time status on private or public status page
Keep your team informed

Start monitoring for free

Frequently Asked Questions

Is Anthropic api.anthropic.com down today?

Anthropic api.anthropic.com isn't down. You can check Anthropic api.anthropic.com status and incident details on the top of the page. IsDown continuously monitors Anthropic api.anthropic.com official status page every few minutes. In the last 24 hours, there were 4 outages reported.

What is the current Anthropic api.anthropic.com status?

Anthropic api.anthropic.com is currently operational. You can check Anthropic api.anthropic.com status and incident details on the top of the page. The status is updated in almost real-time, and you can see the latest outages and issues affecting customers.

Is there a Anthropic api.anthropic.com outage now?

No, there is no ongoing official outage. Check on the top of the page if there are any reported problems by other users.

Is Anthropic api.anthropic.com down today or just slow?

Currently there's no report of Anthropic api.anthropic.com being slow. Check on the top of the page if there are any reported problems by other users.

How are Anthropic api.anthropic.com outages detected?

IsDown monitors the Anthropic api.anthropic.com official status page every few minutes. We also get reports from users like you. If there are enough reports about an outage, we'll show it on the top of the page.

Is Anthropic api.anthropic.com having an outage right now?

Anthropic api.anthropic.com last outage was on January 23, 2026 with the title "Elevated errors: Invalid `signature` in `thinking` block"

How IsDown compares to DownDetector when monitoring Anthropic?

IsDown and DownDetector help users determine if Anthropic is having problems. The big difference is that IsDown is a status page aggregator. IsDown monitors a service's official status page to give our customers a more reliable source of information instead of just relying on reports from users. The integration allows us to provide more details about Anthropic's Outages, like incident title, description, updates, and the parts of the affected service. Additionally, users can create internal status pages and set up notifications for all their third-party services.