Incidentsby GlyphDisruption with some GitHub services
Jun 16, 17:45 UTCJun 16, 18:15 UTC
Duration
30m
Impact
Major
Root cause
Not disclosed
GitHub, 90 days
69 incidents
Affected
Not listed by the vendor.
Lesson: Platform-wide disruptions can affect only a subset of services while others remain operational.
What happened
On June 16, 2026, between 17:20 UTC and 18:15 UTC, the Opus 4.8 model experienced degraded availability in GitHub Copilot. During this window, some requests to Opus 4.8 failed or errored. Other Copilot models were not affected and remained available as alternatives. This was caused by an issue with an upstream model provider. The upstream provider resolved the issue, and we monitored Opus 4.8 until success rates returned to normal. The incident is fully resolved.
Timeline
- Resolved · Jun 16, 18:15 UTC
On June 16, 2026, between 17:20 UTC and 18:15 UTC, the Opus 4.8 model experienced degraded availability in GitHub Copilot. During this window, some requests to Opus 4.8 failed or errored. Other Copilot models were not affected and remained available as alternatives. This was caused by an issue with an upstream model provider. The upstream provider resolved the issue, and we monitored Opus 4.8 until success rates returned to normal. The incident is fully resolved.