Deprecation link header on Azure endpoint has wrong URL

[MayCXC]

The link response header on models.inference.ai.azure.com contains a swapped subdomain.

Actual header:

link: <https://github.blog/changelog/2025-07-17-deprecation-of-azure-endpoint-for-github-models/>; rel="deprecation"; type="text/html", <https://github.models.ai/inference>; rel="alternate"

Problem: github.models.ai does not resolve (TLS SNI error). The correct URL is models.github.ai.

Expected header:

link: ..., <https://models.github.ai/inference>; rel="alternate"

Reproduction:

curl -sv -H "Authorization: Bearer $GH_TOKEN" \
  -H "Content-Type: application/json" \
  "https://models.inference.ai.azure.com/chat/completions" \
  -d '{"model":"gpt-4o-mini","messages":[{"role":"user","content":"hi"}],"max_tokens":5}' \
  2>&1 | grep link:

Note: the header appears intermittently — not every response includes it.

Anyone migrating programmatically by following the rel="alternate" link will hit a dead endpoint.

[SIMARSINGHRAYAT]

This appears to be an Azure Models API bug or deprecated endpoint configuration. The header points to github.blog instead of models.github.ai.

Quick workaround:

• Extract the correct URL from the "Expected header" section you provided (models.github.ai/inference)
• Use that directly instead of following the deprecation link

For GitHub team:
This is a configuration issue on the Azure endpoint - the deprecation header should point to models.github.ai, not github.blog/changelog. This needs to be fixed in the Azure endpoint configuration.

Recommendation:

• File this as a bug with Azure team/GitHub Models team
• Include your reproduction steps and curl command
• The intermittent nature suggests cache or deployment synchronization issue

[MayCXC]

the github.blog link is fine, as explained above the incorrect URL is the one with github.models.ai