Claude Sonnet 4 retirement announcement applies to Copilot
The news at the time
GitHub stated that Claude Sonnet 4 was deprecated across its Copilot experiences on 2026-05-06. The statement concerns Copilot rather than every Anthropic distribution channel.
The announcement directs Copilot Enterprise administrators to check model policies when enabling alternatives.
Follow-up checked during renewal
No additional follow-up fact was established in this renewal. This does not establish that nothing changed.
What to review before applying this
Separate product retirement, provider retirement and local fallback behavior. Test permissions and workflow behavior on supported choices instead of treating an old replacement recommendation as current guidance.
Editorial review suggestions; no hands-on product experiment was performed.
Claim-by-claim source evidence
GitHub stated that Claude Sonnet 4 was deprecated across its Copilot experiences on 2026-05-06. The statement concerns Copilot rather than every Anthropic distribution channel.
Claude Sonnet 4 2026-05-06
Evidence source ↗
The announcement directs Copilot Enterprise administrators to check model policies when enabling alternatives.
enable access to alternative models through their model policies
Evidence source ↗
Korean digest for the historical date: 2026-05-11. Quotations and source context were reviewed editorially; this is not an independent experimental verification.
Discussion