[markijbema]

Summary

• Extracts isFreeModel from apps/web/src/lib/ai-gateway/models.ts into a new apps/web/src/lib/ai-gateway/is-free-model.ts. No behavior change.
• Why: models.ts is reachable from client bundles via constants like PRIMARY_DEFAULT_MODEL and preferredModels (imported by ModelCombobox.tsx, AutoFixConfigForm.tsx, OrganizationProvidersAndModelsPage.tsx, etc.). Follow-up work needs isFreeModel to consult a Redis-backed membership set; doing that inside models.ts would drag the Redis client into client bundles and break next build with Module not found: 'net'/'tls'/'dns/promises'. Splitting now sets up a clean home for the function before that follow-up lands.
• isOpenRouterStealthModel is exported (was file-private) so the new module can use it.

Verification

• pnpm --filter web typecheck clean.
• pnpm --filter web test -- src/lib/ai-gateway/models.test.ts — 18/18 pass (test file's import of isFreeModel was updated to point at the new module).

Visual Changes

N/A.

Reviewer Notes

• Six server-side importers updated mechanically (route.ts, embeddings/route.ts, fim/completions/route.ts, processUsage.ts, agent-runner.ts, openrouter/index.ts).
• The follow-up that motivated this lives on the experiment-models PR (feat(gateway): route and persist model experiments #3325) — once this lands, that branch trivially folds the experiment-membership check into is-free-model.ts without touching any client-reachable file.

[kilo-code-bot]

Code Review Summary

Status: No Issues Found | Recommendation: Merge

Executive Summary

Clean extraction of isFreeModel from models.ts into is-free-model.ts with no behavior change; all six server-side callsites and the test file updated mechanically.

Files Reviewed (8 files)

• apps/web/src/lib/ai-gateway/is-free-model.ts — new file, logic identical to removed function
• apps/web/src/lib/ai-gateway/models.ts — isFreeModel removed, isOpenRouterStealthModel exported
• apps/web/src/lib/ai-gateway/models.test.ts — import updated
• apps/web/src/lib/ai-gateway/processUsage.ts — import updated
• apps/web/src/lib/ai-gateway/providers/openrouter/index.ts — import updated
• apps/web/src/lib/bot/agent-runner.ts — import updated
• apps/web/src/app/api/fim/completions/route.ts — import updated
• apps/web/src/app/api/openrouter/[...path]/route.ts — import updated
• apps/web/src/app/api/openrouter/embeddings/route.ts — import updated

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