# GitHub Copilot: Elevated error rates for Claude Sonnet 3.7

> GitHub Copilot status incident “Elevated error rates for Claude Sonnet 3.7” on 2025-05-20: impact minor (vendor’s label), 3.0 h, 1 update(s). Archived by Rewindex.

Canonical: https://rewindex.com/company/github-copilot/incidents/rkkhrht3j3y3
Last updated: 2025-05-20T16:08:00Z

- Impact (vendor’s label): minor
- Status: resolved
- Started: 2025-05-20 13:10 UTC · Resolved: 2025-05-20 16:08 UTC · Duration: 3.0 h
- Updates: 1
- [Vendor status page: https://www.githubstatus.com/incidents/rkkhrht3j3y3](https://www.githubstatus.com/incidents/rkkhrht3j3y3)
- [Company: GitHub Copilot](https://rewindex.com/company/github-copilot.md)

## Timeline of updates

- **resolved** 2025-05-20 16:08 UTC: On May 20, 2025, between 12:09 PM UTC and 4:07 PM UTC, the GitHub Copilot service experienced degraded availability, specifically for the Claude Sonnet 3.7 model. During this period, the success rate for Claude Sonnet 3.7 requests was highly variable, down to approximately 94% during the most severe spikes. Other models remained available and working as expected throughout the incident. The issue was caused by capacity constraints in our model processing infrastructure that affected our ability to handle the large volume of Claude Sonnet 3.7 requests. We mitigated the incident by rebalancing traffic across our infrastructure, adjusting rate limits, and working with our infrastructure teams to resolve the underlying capacity issues. We are working to improve our infrastructure redundancy and implementing more robust monitoring to reduce detection and mitigation time for similar incidents in the future.

_From the vendor’s published history: only the final update text is available for incidents before Rewindex began polling this page._

## Cite this

Status incident (vendor impact label: minor) posted by GitHub Copilot, started 2025-05-20 13:10 UTC, resolved after 3.0 h, 1 update(s).

- Canonical URL: https://rewindex.com/company/github-copilot/incidents/rkkhrht3j3y3
- Citation: GitHub Copilot, “Elevated error rates for Claude Sonnet 3.7” (2025-05-20 13:10 UTC). Archived by Rewindex: https://rewindex.com/company/github-copilot/incidents/rkkhrht3j3y3 (CC BY 4.0).
- Markdown link: `[GitHub Copilot: Elevated error rates for Claude Sonnet 3.7 (2025-05-20)](https://rewindex.com/company/github-copilot/incidents/rkkhrht3j3y3)`


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Canonical: https://rewindex.com/company/github-copilot/incidents/rkkhrht3j3y3 · Markdown: https://rewindex.com/company/github-copilot/incidents/rkkhrht3j3y3.md · JSON: https://rewindex.com/api/v1/companies/github-copilot/incidents/rkkhrht3j3y3 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-04T17:16:22.125Z