# TwinMind Cost Tuning - Detailed Implementation

## Pricing Model

```typescript
export interface TierPricing {
  name: string;
  monthlyBase: number;
  transcriptionRate: number;
  aiTokenRate: number;
  includedHours: number;
  includedTokens: number;
}

export const pricingTiers: Record<string, TierPricing> = {
  free: {
    name: 'Free',
    monthlyBase: 0,
    transcriptionRate: 0,
    aiTokenRate: 0,
    includedHours: Infinity,
    includedTokens: 500000,
  },
  pro: {
    name: 'Pro',
    monthlyBase: 10,
    transcriptionRate: 0.23,
    aiTokenRate: 0,
    includedHours: Infinity,
    includedTokens: 2000000,
  },
  enterprise: {
    name: 'Enterprise',
    monthlyBase: 0,
    transcriptionRate: 0.15,
    aiTokenRate: 0,
    includedHours: Infinity,
    includedTokens: Infinity,
  },
};
```

## Usage Analyzer

```typescript
export interface UsageData {
  period: string;
  transcriptionHours: number;
  apiRequests: number;
  aiTokensUsed: number;
  storageGB: number;
  meetings: number;
}

export async function analyzeUsage(): Promise<CostAnalysis> {
  const client = getTwinMindClient();
  const usage = await client.get('/usage', { params: { period: 'last_30_days' } });
  const data: UsageData = usage.data;
  const currentTier = (await client.get('/account')).data.plan;

  const costByTier: Record<string, number> = {};
  for (const [tierName, tier] of Object.entries(pricingTiers)) {
    costByTier[tierName] = calculateTierCost(tier, data);
  }

  const validTiers = Object.entries(costByTier)
    .filter(([tier]) => meetsRequirements(tier, data))
    .sort(([, a], [, b]) => a - b);

  const recommendedTier = validTiers[0]?.[0] || 'pro';
  return {
    currentTier,
    currentCost: costByTier[currentTier],
    estimatedCostPerTier: costByTier,
    recommendedTier,
    potentialSavings: costByTier[currentTier] - costByTier[recommendedTier],
  };
}

function calculateTierCost(tier: TierPricing, usage: UsageData): number {
  let cost = tier.monthlyBase;
  if (usage.transcriptionHours > tier.includedHours) {
    cost += (usage.transcriptionHours - tier.includedHours) * tier.transcriptionRate;
  }
  if (usage.aiTokensUsed > tier.includedTokens) {
    cost += ((usage.aiTokensUsed - tier.includedTokens) / 1000000) * tier.aiTokenRate;
  }
  return cost;
}
```

## Budget Monitor

```typescript
export class CostMonitor {
  private config: BudgetConfig;

  constructor(config: BudgetConfig) { this.config = config; }

  async checkBudget(): Promise<CostAlert | null> {
    const client = getTwinMindClient();
    const usage = await client.get('/usage/cost', { params: { period: 'current_month' } });
    const currentSpend = usage.data.total_cost;
    const percentUsed = currentSpend / this.config.monthlyBudget;

    if (percentUsed >= this.config.criticalThreshold) {
      return { type: 'critical', message: `Spending at ${(percentUsed * 100).toFixed(1)}%`, currentSpend, threshold: this.config.monthlyBudget, percentUsed };
    }
    if (percentUsed >= this.config.warningThreshold) {
      return { type: 'warning', message: `Spending at ${(percentUsed * 100).toFixed(1)}%`, currentSpend, threshold: this.config.monthlyBudget, percentUsed };
    }
    return null;
  }

  async sendAlert(alert: CostAlert): Promise<void> {
    if (this.config.notifications.slack) {
      await sendSlackNotification(this.config.notifications.slack, { text: alert.message });
    }
  }
}

export function startCostMonitoring(config: BudgetConfig): void {
  const monitor = new CostMonitor(config);
  setInterval(async () => {
    const alert = await monitor.checkBudget();
    if (alert) await monitor.sendAlert(alert);
  }, 60 * 60 * 1000);
}
```

## Token Optimization

```typescript
export const tokenEfficientOptions = {
  brief: { maxLength: 150, estimatedTokens: 200 },
  standard: { maxLength: 300, estimatedTokens: 500 },
  detailed: { maxLength: 500, estimatedTokens: 800 },
};
```

## Quota Manager

```typescript
export class QuotaManager {
  private config: QuotaConfig;
  private usage = { transcriptionHours: 0, apiRequests: 0, aiTokens: 0 };

  canMakeApiRequest(): boolean {
    return this.usage.apiRequests < this.config.dailyApiRequests;
  }

  recordUsage(type: 'transcription' | 'api' | 'tokens', amount: number): void {
    switch (type) {
      case 'api': this.usage.apiRequests += amount; break;
      case 'tokens': this.usage.aiTokens += amount; break;
      case 'transcription': this.usage.transcriptionHours += amount; break;
    }
  }
}

export function quotaMiddleware(quotaManager: QuotaManager) {
  return (req: Request, res: Response, next: NextFunction) => {
    if (!quotaManager.canMakeApiRequest()) {
      return res.status(429).json({ error: 'Daily API quota exceeded' });
    }
    quotaManager.recordUsage('api', 1);
    next();
  };
}
```

## Cost Optimization Strategies

| Strategy | Savings | Implementation |
|----------|---------|----------------|
| Use brief summaries | 30-50% tokens | Set maxLength: 150 |
| Cache memory searches | 20-30% | Implement result caching |
| Batch transcriptions | 10-15% | Group small files |
| Annual billing | 33% | Switch to annual plan |

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*[Tons of Skills](https://tonsofskills.com) by [Intent Solutions](https://intentsolutions.io) | [jeremylongshore.com](https://jeremylongshore.com)*
