Update model recommendations and defaults

[chrarnoldus]

Summary

• add ~z-ai/glm-flash-latest and map it to zai/glm-5.3-flash for Vercel routing
• update Claude Fable latest from 5 to 5.1
• recommend DeepSeek V4.1 Flash and GLM 5.3 Flash ahead of Kimi and MiniMax
• remove Claude Sonnet 5 and GLM 5.3 from the recommended model list
• change PRIMARY_DEFAULT_MODEL to z-ai/glm-5.3-flash
• use PRIMARY_DEFAULT_MODEL for every Auto Balanced and Auto Efficient fallback path

Testing

• pnpm --filter web test --runInBand src/lib/ai-gateway/auto-model/resolution.test.ts src/tests/openrouter-models-config.test.ts (31 tests passed)
• pnpm --filter @kilocode/trpc run build
• formatted changed files with oxfmt
• git diff --check

[kilo-code-bot]

Code Review Summary

Status: No Issues Found | Recommendation: Merge

Executive Summary

Unifying Auto Balanced and Auto Efficient static fallbacks onto PRIMARY_DEFAULT_MODEL is consistent, fully referenced, and covered by tests.

Files Reviewed (3 files)

• apps/web/src/lib/ai-gateway/auto-model/index.ts
• apps/web/src/lib/ai-gateway/auto-model/resolution.test.ts
• apps/web/src/lib/ai-gateway/auto-model/resolution.ts

Previous Review Summaries (3 snapshots, latest commit 22b60f6)

Current summary above is authoritative. Previous snapshots are kept for context only.

Previous review (commit 22b60f6)

Status: No Issues Found | Recommendation: Merge

Executive Summary

Incremental review of the GLM Flash efficient fallback and PRIMARY_DEFAULT_MODEL switch found no remaining defects.

Files Reviewed (5 files)

• apps/web/src/lib/ai-gateway/auto-model/index.ts
• apps/web/src/lib/ai-gateway/auto-model/resolution.test.ts
• apps/web/src/lib/ai-gateway/auto-model/resolution.ts
• apps/web/src/lib/ai-gateway/models.ts
• apps/web/src/tests/openrouter-models-config.test.ts

Previous review (commit a2365e7)

Status: No Issues Found | Recommendation: Merge

Executive Summary

Incremental review of the restored CLAUDE_SONNET_CURRENT_MODEL_ID import confirmed PRIMARY_DEFAULT_MODEL is defined again; no remaining defects.

Files Reviewed (1 files)

• apps/web/src/lib/ai-gateway/models.ts

Previous review (commit 3fcb378)

Status: 1 Issue Found | Recommendation: Address before merge

Executive Summary

Removing CLAUDE_SONNET_CURRENT_MODEL_ID from the models.ts import leaves PRIMARY_DEFAULT_MODEL undefined and will fail typecheck.

Overview

Severity	Count
CRITICAL	1
WARNING	0
SUGGESTION	0

Issue Details (click to expand)

CRITICAL

File	Line	Issue
apps/web/src/lib/ai-gateway/models.ts	11	CLAUDE_SONNET_CURRENT_MODEL_ID still used by PRIMARY_DEFAULT_MODEL but dropped from the import

Files Reviewed (8 files)

• apps/web/src/lib/ai-gateway/models.ts - 1 issue
• apps/web/src/lib/ai-gateway/latest-model-aliases.ts
• apps/web/src/lib/ai-gateway/providers/anthropic.constants.ts
• apps/web/src/lib/ai-gateway/providers/deepseek.ts
• apps/web/src/lib/ai-gateway/providers/vercel/mapModelIdToVercel.test.ts
• apps/web/src/lib/ai-gateway/providers/vercel/mapModelIdToVercel.ts
• apps/web/src/lib/ai-gateway/providers/zai.ts
• apps/web/src/tests/openrouter-models-config.test.ts

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_{Reviewed by grok-4.6 · Input: 105.4K · Output: 6K · Cached: 155.6K}

_{Review guidance: REVIEW.md from base branch main}