Cerebras Outage History

Cerebras is up right now

There were 10 Cerebras outages since February 4, 2026 totaling 29h 32m of downtime. Each is summarised below — incident details, duration, and resolution information.

Source: https://status.cerebras.ai

Critical May 1, 2026

qwen-3-235b-a22b-instruct-2507 Service Unavailable

Detected by Pingoru
May 01, 2026, 07:59 AM UTC
Resolved
May 01, 2026, 08:57 AM UTC
Duration
57m
Affected: Qwen-3-235B-Instruct-2507
Timeline · 2 updates
  1. investigating May 01, 2026, 07:59 AM UTC

    The service is currently inaccessible. We are currently working urgently to restore service capabilities. We will provide further updates as we make progress.

  2. resolved May 01, 2026, 08:57 AM UTC

    This incident has been resolved.

Read the full incident report →

Notice April 3, 2026

Partial service disruption with GPT-OSS-120B

Detected by Pingoru
Apr 03, 2026, 10:38 AM UTC
Resolved
Apr 03, 2026, 09:00 AM UTC
Duration
Timeline · 1 update
  1. resolved Apr 03, 2026, 10:38 AM UTC

    Between 9:07 AM UTC and 9:18 AM UTC users experienced partial service disruption with gpt-oss-120b. We have deployed a fix and the issue is now resolved.

Read the full incident report →

Notice March 18, 2026

GLM 4.7 Partial Service Disruption

Detected by Pingoru
Mar 18, 2026, 09:40 AM UTC
Resolved
Mar 18, 2026, 05:30 AM UTC
Duration
Timeline · 1 update
  1. resolved Mar 18, 2026, 09:40 AM UTC

    Between 10:30 PM PST and 11:42 PM PST 03/17 users experienced partial degradation with glm-4.7. We have deployed a fix and the issue is now resolved.

Read the full incident report →

Major March 17, 2026

Z.ai GLM 4.7 Service Unavailable

Detected by Pingoru
Mar 17, 2026, 12:21 PM UTC
Resolved
Mar 17, 2026, 06:31 PM UTC
Duration
6h 10m
Affected: ZAI-GLM-4.7
Timeline · 2 updates
  1. identified Mar 17, 2026, 12:21 PM UTC

    The service is currently inaccessible. We are currently working urgently to restore service capabilities. We will provide further updates as we make progress.

  2. resolved Mar 17, 2026, 06:31 PM UTC

    This incident has been resolved.

Read the full incident report →

Minor March 6, 2026

Partial Service Disruption

Detected by Pingoru
Mar 06, 2026, 05:29 AM UTC
Resolved
Mar 06, 2026, 05:51 AM UTC
Duration
22m
Affected: Qwen-3-235B-Instruct-2507
Timeline · 3 updates
  1. investigating Mar 06, 2026, 05:29 AM UTC

    Qwen 235B is facing partial service disruption. We are currently working to resume normal service performance. We will provide further updates as we make progress.

  2. monitoring Mar 06, 2026, 05:47 AM UTC

    We identified the issue, applied a fix and are monitoring the endpoint.

  3. resolved Mar 06, 2026, 05:51 AM UTC

    Between 4:53 UTC ending 5:38 UTC, Qwen 3 235B endpoint experienced a partial service disruption due to a transient network issue. The issue has been identified and fixed, the endpoint is operational.

Read the full incident report →

Minor February 10, 2026

Partial Service Disruption on zai-glm-4.7

Detected by Pingoru
Feb 10, 2026, 09:37 PM UTC
Resolved
Feb 11, 2026, 06:14 AM UTC
Duration
8h 36m
Affected: ZAI-GLM-4.7
Timeline · 3 updates
  1. investigating Feb 10, 2026, 09:37 PM UTC

    We are currently investigating an issue with zai-glm-4.7 where users are seeing an elevated number of 503 errors. Engineering is working on a resolution.

  2. identified Feb 11, 2026, 12:12 AM UTC

    We've identified a fix and our engineering team is deploying this now.

  3. resolved Feb 11, 2026, 06:14 AM UTC

    This incident has been resolved.

Read the full incident report →

Minor February 10, 2026

Partial Service Disruption on Llama-3.3-70B

Detected by Pingoru
Feb 10, 2026, 07:52 PM UTC
Resolved
Feb 10, 2026, 10:47 PM UTC
Duration
2h 55m
Timeline · 4 updates
  1. investigating Feb 10, 2026, 07:52 PM UTC

    We are currently investigating an issue with Llama-3.3-70B where users are seeing an elevated number of 503 errors. Engineering is working on a resolution.

  2. investigating Feb 10, 2026, 09:09 PM UTC

    We've identified a fix and our engineering team is deploying this now.

  3. investigating Feb 10, 2026, 10:47 PM UTC

    Our engineering team has resolved the issue.

  4. resolved Feb 10, 2026, 10:47 PM UTC

    This incident has been resolved.

Read the full incident report →

Minor February 5, 2026

Partial Service Disruption on Cerebras Endpoints

Detected by Pingoru
Feb 05, 2026, 06:42 AM UTC
Resolved
Feb 05, 2026, 08:04 AM UTC
Duration
1h 22m
Affected: Llama3.1-8BQwen-3-235B-Instruct-2507GPT-OSS-120BZAI-GLM-4.7Developer Console
Timeline · 2 updates
  1. investigating Feb 05, 2026, 06:42 AM UTC

    We are investigating 502 Gateway errors on Cerebras endpoints. We are currently working to resume normal service performance. We will provide further updates as we make progress.

  2. resolved Feb 05, 2026, 08:04 AM UTC

    Between 7.30 PM PT and 11 PM PT, the inference service was partially disrupted by 502 Gateway errors across all endpoints. This issue is caused by an internal system dependency, the fix was rolled out and the service is operational across all endpoints.

Read the full incident report →

Major February 4, 2026

Partial Service Disruption Qwen 235B

Detected by Pingoru
Feb 04, 2026, 04:59 PM UTC
Resolved
Feb 05, 2026, 02:07 AM UTC
Duration
9h 7m
Affected: Qwen-3-235B-Instruct-2507
Timeline · 4 updates
  1. investigating Feb 04, 2026, 04:59 PM UTC

    Qwen 235B performance is degraded and temporarily unavailable for some service tiers. We are currently working to resume normal service performance. We will provide further updates as we make progress.

  2. monitoring Feb 04, 2026, 06:53 PM UTC

    As part of recent changes in traffic patterns and capacity, we are temporarily turning down rate limits for Pay-go users to help maintain a positive experience across the board. We understand the challenges this may create for you and your users, and we sincerely apologize for the inconvenience. We plan to monitor this endpoint and evaluate restoring rate limits in the next week. Thank you for your continued partnership and understanding, please reach out to our support team for any other questions.

  3. investigating Feb 05, 2026, 02:07 AM UTC

    Between 06:00 AM PT and 06:00 PM PT users experienced service disruption with Qwen 3 235B Instruct. We have taken action to address recent changes in traffic patterns and capacity, reducing the disruption. We plan to monitor this endpoint and evaluate restoring rate limits in the next week for Pay Go users.

  4. resolved Feb 05, 2026, 02:07 AM UTC

    Between 06:00 AM PT and 06:00 PM PT users experienced service disruption with Qwen 3 235B Instruct. We have taken action to address recent changes in traffic patterns and capacity, reducing the disruption. We plan to monitor this endpoint and evaluate restoring rate limits in the next week for Pay Go users.

Read the full incident report →

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