chore: update model deprecation dates

[rcogal]

Summary

Update deprecation and deactivation dates for retiring models based on official provider announcements.

Model Deprecation Summary

Model	Provider	deprecatedAt	deactivatedAt
gpt-4o-mini	Azure	2026-01-09	2026-03-31
gemini-2.0-flash	google-ai-studio, google-vertex	2026-01-22	2026-03-31
gemini-2.0-flash-lite	google-ai-studio, google-vertex	2026-01-22	2026-03-31
gemini-2.5-flash-image-preview	google-ai-studio, google-vertex	2025-12-04	2026-01-15
claude-3-5-haiku-20241022	anthropic	2025-12-19	2026-02-19
grok-3-mini	xai	2026-01-30	2026-02-28
grok-2-vision-1212	xai	2026-01-30	2026-02-28

Sources

• Google Gemini API Changelog
• Google Gemini Deprecations
• Anthropic Model Deprecations
• Azure OpenAI Model Retirements
• xAI email announcement (January 30, 2026)

Test plan

• Verify pnpm build passes
• Confirm deprecated models show correct status in UI

🤖 Generated with Claude Code

Summary by CodeRabbit

• New Features
  • Added deprecation and deactivation timestamps to multiple AI model configurations (e.g., Azure GPT-4o Mini, Grok-3 Mini, several Google models) so users can see planned deprecation and removal dates.
• Updates
  • Corrected the deprecation date for one Claude model entry to an earlier, accurate date.

[coderabbitai]

Walkthrough

Adds deprecatedAt and deactivatedAt Date fields to multiple provider model configuration objects across Google, OpenAI, and XAI model files, and adjusts one deprecatedAt timestamp in Anthropic models. No behavioral or structural logic changes.

Changes

Cohort / File(s)	Summary
Google models packages/models/src/models/google.ts	Added deprecatedAt and deactivatedAt (Date) to multiple Gemini/provider entries (various gemini-2.5 / gemini-2.0 variants) with explicit dates (e.g., 2025-12-04, 2026-01-15, 2026-03-31).
OpenAI models packages/models/src/models/openai.ts	Added deprecatedAt and deactivatedAt (Date) to the Azure gpt-4o-mini provider entry with dates (e.g., 2026-01-23, 2026-03-31).
Anthropic models packages/models/src/models/anthropic.ts	Adjusted deprecatedAt timestamp for claude-3-5-haiku from 2026-01-21 to 2025-12-19; no other changes.
XAI models packages/models/src/models/xai.ts	Added deprecatedAt and deactivatedAt (Date) to the grok-3-mini provider entry with explicit timestamps.
Gateway tests apps/gateway/src/models/models.spec.ts	Test updated to request models with include_deactivated=true for the gemini-2.5-flash-image-preview model endpoint call.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Possibly related PRs

• feat(models): expand together.ai models #573 — Modifies provider model entries in packages/models/src/models/google.ts by adding/updating deprecatedAt/deactivatedAt fields.
• feat(models): filter deprecated mappings #1527 — Adds logic/tests that filter or rely on deprecatedAt/deactivatedAt metadata; directly related to these new fields.
• chore(tests): skip per-provider deprecated/deactivated mappings #1356 — Adjusts tests/mappings that use deprecation metadata on provider entries, closely connected to these timestamp additions.

Suggested reviewers

• steebchen
• kmk142789420-stack

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title 'chore: update model deprecation dates' directly and clearly summarizes the main change—updating deprecation and deactivation dates across multiple model provider configurations.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch chore/deprecate-models-jan-2026

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[coderabbitai]

Actionable comments posted: 1

🤖 Fix all issues with AI agents

In `@packages/models/src/models/google.ts`:
- Around line 663-664: The deprecation timeline is inverted for the Google model
entries: the deprecatedAt (new Date("2026-01-23")) is after deactivatedAt (new
Date("2026-01-15")), which violates the expected deprecatedAt <= deactivatedAt
ordering; locate the object(s) that set the deprecatedAt and deactivatedAt
properties (look for the entries with property names deprecatedAt and
deactivatedAt in packages/models/src/models/google.ts, including the second
occurrence around lines noted in the comment) and fix by making deprecatedAt
on-or-before deactivatedAt (e.g., swap the two dates or adjust deprecatedAt to
"2026-01-15" or deactivatedAt to "2026-01-23" as appropriate for the true
timeline).

[rcogal]

this date is coming from their changelog

[rcogal]

@steebchen @smakosh Can you check this please if this change is OK?

The test is looking for gemini-2.5-flash-image-preview model and expects it to be defined. However, since this model now has deactivatedAt: 2026-01-15 (which is in the past - we're on 2026-02-04), the model is likely being filtered out by default. To fix it, need to add this filter include_deactivated

[rcogal]

This issue happened for gemini-2.5-flash-image-preview earlier

[steebchen]

ah good yeah that's the correct fix