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Disruption with Gemini 2.5 Pro

Incident Report for GitHub

Resolved

Between May 15, 2025 10:10 UTC and May 15, 2025 22:58 UTC the Copilot service was degraded and returned a high volume of internal server errors for requests targeting Gemini 2.5 Pro, a public preview model. This was due to a high volume of rate limiting by the upstream model provider, similar in volume to the internal server errors during the previous day.

We mitigated the incident by temporarily disabling Gemini 2.5 Pro for all Copilot Chat experiences, and then worked with the model provider to ensure model health was sufficiently improved before re-enabling.

We are working with the model provider to move to more resilient infrastructure to mitigate issues like this one in the future.
Posted May 15, 2025 - 22:58 UTC

Update

The issues with our upstream model provider have been resolved, and Gemini 2.5 Pro is available again in Copilot Chat, VS Code, and other Copilot products.

We will continue monitoring to ensure stability, but mitigation is complete.
Posted May 15, 2025 - 22:57 UTC

Update

We have started to gradually re-enable the Gemini 2.5 Pro model in Copilot Chat, VS Code, and other Copilot products.
Posted May 15, 2025 - 22:20 UTC

Update

We have disabled the Gemini 2.5 Pro model in Copilot Chat, VS Code and other Copilot products due to an issue with an upstream model provider.

Users may still see these models as available for a brief period but we recommend switching to a different model. Other models are not impacted and are available.

Once our model provider has resolved the issues impacting Gemini 2.5 Pro, we will re-enable it.
Posted May 15, 2025 - 13:16 UTC

Investigating

We are currently investigating this issue.
Posted May 15, 2025 - 12:41 UTC