# GitHub: Claude Opus 4.5 model experiencing degraded performance

> GitHub status incident “Claude Opus 4.5 model experiencing degraded performance” on 2026-01-14: impact minor (vendor’s label), 1.4 h, 1 update(s). Archived by Rewindex.

Canonical: https://rewindex.com/company/github/incidents/4htf8bgy1xlz
Last updated: 2026-01-14T12:23:00Z

- Impact (vendor’s label): minor
- Status: resolved
- Started: 2026-01-14 10:56 UTC · Resolved: 2026-01-14 12:23 UTC · Duration: 1.4 h
- Updates: 1
- [Vendor status page: https://www.githubstatus.com/incidents/4htf8bgy1xlz](https://www.githubstatus.com/incidents/4htf8bgy1xlz)
- [Company: GitHub](https://rewindex.com/company/github.md)

## Timeline of updates

- **resolved** 2026-01-14 12:23 UTC: On January 14th, 2026, between approximately 10:20 and 11:25 UTC, the Copilot service experienced a degradation of the Claude Opus 4.5 model due to an issue with our upstream provider. During this time period, users encountered a 4.5% error rate when using Claude Opus 4.5. No other models were impacted. The issue was resolved by a mitigation put in place by our provider. GitHub is working with our provider to further improve the resiliency of the service to prevent 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, started 2026-01-14 10:56 UTC, resolved after 1.4 h, 1 update(s).

- Canonical URL: https://rewindex.com/company/github/incidents/4htf8bgy1xlz
- Citation: GitHub, “Claude Opus 4.5 model experiencing degraded performance” (2026-01-14 10:56 UTC). Archived by Rewindex: https://rewindex.com/company/github/incidents/4htf8bgy1xlz (CC BY 4.0).
- Markdown link: `[GitHub: Claude Opus 4.5 model experiencing degraded performance (2026-01-14)](https://rewindex.com/company/github/incidents/4htf8bgy1xlz)`


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Canonical: https://rewindex.com/company/github/incidents/4htf8bgy1xlz · Markdown: https://rewindex.com/company/github/incidents/4htf8bgy1xlz.md · JSON: https://rewindex.com/api/v1/companies/github/incidents/4htf8bgy1xlz · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-04T17:54:15.510Z