wenjin272 commented on PR #1039:
URL: https://github.com/apache/flink-agents/pull/1039#issuecomment-5406836680

   Thanks for updating the stale default and keeping Java, Python, and the docs 
aligned. One concern: `claude-sonnet-4-5` only tracks snapshots within the 4.5 
version and does not advance to 4.6 or 5; Anthropic states that every model ID 
has its own retirement schedule, and the current 4.5 snapshot may retire as 
early as September 29, 2026 ([model 
versioning](https://platform.claude.com/docs/en/about-claude/models/model-ids-and-versions),
 
[deprecations](https://platform.claude.com/docs/en/about-claude/model-deprecations)).
 Could we use the recommended replacement `claude-sonnet-4-6`, or require an 
explicit model, so the stale-default problem is not merely postponed? The 
Python default test should also assert the chosen literal, since comparing with 
the same imported constant does not validate the public default. Also, 
[`ChatModelIntegrationAgent`](https://github.com/apache/flink-agents/blob/11e763a47589850c3187501156308a014ff2e8b0/e2e-test/flink-agents-end-to-end-tests-integration/sr
 
c/test/java/org/apache/flink/agents/integration/test/ChatModelIntegrationAgent.java#L123-L127)
 still hard-codes the retired `claude-sonnet-4-20250514`, so the Anthropic E2E 
path will fail when run with a real API key.


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