GitHub Outages 2025 - 2026: Reliability Analysis and Outage History
Executive Summary
Hashicorp's co-founder Mitchell Hashimoto decided to pull out his Ghostty project from GitHub in April 2026 due to GitHub's reliability issues. He did this after 18 years of using GitHub, saying that GitHub "is no longer a place for serious work".
GitHub has experienced a significant decline in reliability over the past 6 months, and Hashimoto is not alone in expressing this sentiment. In the past 12 months, GitHub has experienced 48 major outages, including outages in GitHub Actions, Copilot, Pull Requests, and core Git operations.
This article analyzes in depth GitHub's outage history between May 2025 and April 2026, the possible causes, and the impact on developers and businesses. IncidentHub has monitored every GitHub outage for the past 12 months and beyond - read on to find out what the data reveals.





