chore: update retired claude-3-haiku-20240307 to claude-haiku-4-5-20251001

[ryan-crabbe-berri]

Summary

Anthropic retired claude-3-haiku-20240307 on 2026-04-20 (see model deprecations), causing test_anthropic_messages_litellm_router_non_streaming_with_logging in tests/pass_through_unit_tests/test_anthropic_messages_passthrough.py to 404 on CI.

This PR replaces the 16 references to claude-3-haiku-20240307 in that file with the current pinned Haiku version, claude-haiku-4-5-20251001 (per Anthropic's recommended replacement).

Scope intentionally kept to the single test file whose failure we observed. Other files referencing the retired name (catalog JSONs, Bedrock/Vertex refs, pattern-resolution tests, docs) were not touched — they're either not broken by the retirement or use the string as a fixture rather than calling the API.

Type

🧹 Refactoring

Test plan

• test_anthropic_messages_litellm_router_non_streaming_with_logging passes against the live Anthropic API
• Other tests in tests/pass_through_unit_tests/test_anthropic_messages_passthrough.py that assert on the model name (e.g. call_kwargs["model"] == ...) pick up the new value

[greptile-apps]

Greptile Summary

This PR replaces the retired claude-3-haiku-20240307 model ID with claude-haiku-4-5-20251001 across six test files to fix a 404 that was breaking CI. The scope is intentionally narrow — only test call sites that would hit the live Anthropic API are updated; fixture strings, Bedrock references, and catalog JSONs are left untouched.

Confidence Score: 5/5

Safe to merge — mechanical model-ID replacement with no logic changes and no test coverage weakened

All changes are direct string substitutions of a retired model ID. No assertions were weakened, no mocks were changed to hide regressions, and the Bedrock/Vertex references were correctly left untouched. No P0/P1 findings.

No files require special attention

Important Files Changed

Filename	Overview
tests/pass_through_unit_tests/test_anthropic_messages_passthrough.py	16 occurrences of claude-3-haiku-20240307 replaced with claude-haiku-4-5-20251001; mock-based tests updated consistently alongside the live-API test that was 404-ing
tests/local_testing/test_function_call_parsing.py	Direct Anthropic model updated; Bedrock variant anthropic.claude-3-haiku-20240307-v1:0 intentionally left as-is per stated PR scope
tests/local_testing/test_router_fallbacks.py	Two litellm_params.model values updated; logical alias claude-3-haiku kept unchanged, which is correct since aliases are independent of the underlying model ID
tests/local_testing/test_streaming.py	Two parametrized model entries replaced cleanly with no other changes
tests/local_testing/test_function_calling.py	Two parametrized model entries updated; surrounding test logic untouched
tests/local_testing/test_batch_completions.py	Single model reference updated in batch completion model list

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    A[CI test 404s on retired
claud-3-haiku-20240307] --> B{Is reference a
live API call?}
    B -->|Yes - Anthropic direct| C[Replace with
claude-haiku-4-5-20251001]
    B -->|No - Bedrock/Vertex/fixture| D[Leave unchanged]
    C --> E[6 test files updated
~16 occurrences]
    D --> F[Catalog JSONs, Bedrock refs,
docs untouched]
    E --> G[CI passes again]

Loading

_{Reviews (3): Last reviewed commit: "replace retired claude-3-haiku-20240307 ..." | Re-trigger Greptile}