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fix(ai-gateway): stop treating OpenRouter alpha/beta as free #4622

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fix(ai-gateway): stop treating OpenRouter alpha/beta as free #4622

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7 changes: 1 addition & 6 deletions apps/web/src/lib/ai-gateway/is-free-model.ts
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Original file line number Diff line number Diff line change
@@ -1,9 +1,5 @@
import { KILO_AUTO_FREE_MODEL } from '@/lib/ai-gateway/auto-model';
import {
isKiloExclusiveFreeModel,
isOpenRouterStealthModel,
kiloExclusiveModels,
} from '@/lib/ai-gateway/models';
import { isKiloExclusiveFreeModel, kiloExclusiveModels } from '@/lib/ai-gateway/models';
import { isPublicIdExperimented } from '@/lib/ai-gateway/experiments/membership';

/**
Expand All @@ -22,7 +18,6 @@ export async function isFreeModel(model: string): Promise<boolean> {
model === KILO_AUTO_FREE_MODEL.id ||
(model ?? '').endsWith(':free') ||
model === 'openrouter/free' ||
isOpenRouterStealthModel(model ?? '') ||
(await isPublicIdExperimented(model ?? ''))
);
}
Expand Down
16 changes: 6 additions & 10 deletions apps/web/src/lib/ai-gateway/models.test.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -22,13 +22,6 @@ describe('isFreeModel', () => {
expect(await isFreeModel('openrouter/free')).toBe(true);
});

test('should return true for OpenRouter stealth models (alpha/beta)', async () => {
expect(await isFreeModel('openrouter/model-alpha')).toBe(true);
expect(await isFreeModel('openrouter/model-beta')).toBe(true);
expect(await isFreeModel('openrouter/sonoma-dusk-alpha')).toBe(true);
expect(await isFreeModel('openrouter/sonoma-sky-beta')).toBe(true);
});

test('should return true for enabled Kilo exclusive models with no pricing', async () => {
// Test with known Kilo exclusive models that are enabled and have no pricing (free)
const enabledFreeModels = kiloExclusiveModels.filter(
Expand Down Expand Up @@ -158,10 +151,15 @@ describe('isFreeModel', () => {
expect(await isFreeModel('freemium')).toBe(false);
});

test('should return false for OpenRouter models that do not end with -alpha or -beta', async () => {
test('should return false for OpenRouter models including alpha/beta', async () => {
expect(await isFreeModel('openrouter/model')).toBe(false);
expect(await isFreeModel('openrouter/model-gamma')).toBe(false);
expect(await isFreeModel('openrouter/model-stable')).toBe(false);
expect(await isFreeModel('openrouter/model-alpha')).toBe(false);
expect(await isFreeModel('openrouter/model-beta')).toBe(false);
expect(await isFreeModel('openrouter/sonoma-dusk-alpha')).toBe(false);
expect(await isFreeModel('openrouter/sonoma-sky-beta')).toBe(false);
expect(await isFreeModel('openrouter/auto-beta')).toBe(false);
});

test('should return false for non-OpenRouter models ending with -alpha or -beta', async () => {
Expand All @@ -185,15 +183,13 @@ describe('isFreeModel', () => {
expect(await isFreeModel('model:FREE')).toBe(false);
expect(await isFreeModel('model:Free')).toBe(false);
expect(await isFreeModel('OPENROUTER/FREE')).toBe(false);
expect(await isFreeModel('openrouter/model-ALPHA')).toBe(false);
});

test('should handle whitespace correctly', async () => {
expect(await isFreeModel('model:free ')).toBe(false);
expect(await isFreeModel(' model:free')).toBe(true);
expect(await isFreeModel(' openrouter/free')).toBe(false);
expect(await isFreeModel('openrouter/free ')).toBe(false);
expect(await isFreeModel('openrouter/model-alpha ')).toBe(false);
});
});
});
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4 changes: 0 additions & 4 deletions apps/web/src/lib/ai-gateway/models.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -116,10 +116,6 @@ export function shouldRedactModelNameInResponse(provider: ProviderId, model: str
);
}

export function isOpenRouterStealthModel(model: string): boolean {
return model.startsWith('openrouter/') && (model.endsWith('-alpha') || model.endsWith('-beta'));
}

export function isDeadFreeModel(model: string): boolean {
return !!kiloExclusiveModels.find(
m => m.public_id === model && m.status === 'disabled' && !m.pricing
Expand Down