GitHub Copilot now lists Claude Haiku 5.5 as generally available
As of October 7, 2026, GitHub Copilot's official supported-models page lists Claude Haiku 5.5 as generally available. The supplied page does not establish its launch date or which specific plans and clients can access it.
SessionWatcher editorial · Published · Updated · Source announcement: 2026-10-07
Related guide: How to check your GitHub Copilot usage
Claude Haiku 5.5 joins the supported-models list
As of October 7, 2026, GitHub Copilot's official supported-models page lists Anthropic's Claude Haiku 5.5 with GA release status. The observed update adds it alongside Claude Haiku 4.5, which remains listed as generally available.
This is a change observed on the documentation page, not a dated launch announcement. The supplied evidence does not establish when access began.
Check availability for your plan and client
GitHub says model availability depends on your Copilot plan and where you use Copilot. The supplied table text does not identify which specific plans or clients get Haiku 5.5, and it provides no model-specific pricing.
AI assisted reporting, checked against the linked official sources. Source pages checked 2026-10-07. Editorial process and corrections.