chore: Sync model types from SAP Notes and recent announcements

[davidkna-sap]

Automated sync of model types from SAP Notes 3437766.

Changes

• Marked deprecated in sap-models.json: gpt-4o (2024-11-20), gpt-4.1, gpt-4.1-mini, o1, o3-mini, o3, o4-mini, gemini-2.5-flash-image
• Corrected amazon--nova-premier retirement date: 2026-09-10 → 2026-09-14
• Added retired entries: gpt-35-turbo v0613, amazon--titan-image-generator v2
• Removed from model-types.ts: gpt-4.1, gpt-4.1-mini, o3, o4-mini
• Updated sample code: llm-batch.ts → gpt-5, packages/openai/src/client.ts JSDoc → gpt-5.4

Definition of Done

• Model names are correct
• Compilation passes
• Release notes / Changeset updated if needed

[hyperspace-insights]

Summary

The following content is AI-generated and provides a summary of the pull request:

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Sync Model Types from SAP Notes and Recent Announcements

What this PR does and why it is needed

This PR synchronizes the AI SDK model types and metadata with the latest information from SAP Notes 3437766 and recent model lifecycle announcements.

Changes summary:

scripts/sap-models.json — Model metadata updates:

• 🔴 Marked as deprecated: gpt-4o (2024-11-20), gpt-4.1, gpt-4.1-mini, o1, o3-mini, o3, o4-mini, gemini-2.5-flash-image
• 📅 Corrected retirement date for amazon--nova-premier: 2026-09-10 → 2026-09-14
• ⚰️ Added retired entries: gpt-35-turbo (v0613) and amazon--titan-image-generator (v2)

packages/core/src/model-types.ts — Type definition cleanup:

• 🗑️ Removed deprecated models gpt-4.1, gpt-4.1-mini, o3, and o4-mini from AzureOpenAiChatModel type union

packages/openai/src/client.ts — JSDoc update:

• 📝 Updated example model in JSDoc from gpt-4.1 to gpt-5.4

sample-code/src/llm-batch.ts — Sample code update:

• 📝 Updated batch sample code model references from gpt-4.1 to gpt-5

.changeset/model-types-sync-2026-07-03.md — Changeset:

• 📦 Added minor changeset for @sap-ai-sdk/core documenting the removal of deprecated models with their retirement dates (2026-10-14 for gpt-4.1/gpt-4.1-mini, 2026-10-16 for o3/o4-mini)

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PR Bot Information

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[InjunPark-sap]

LGTM