2.4 KiB
2.4 KiB
Gift-a-Roast — Cost Analysis & Pricing
Per-Call Cost Breakdown (2-minute roast call, outbound)
| Layer | Service | Unit Cost | Call Usage | Subtotal |
|---|---|---|---|---|
| Twilio call | Programmable Voice (outbound) | $0.014/min | 2 min | $0.028 |
| Twilio Studio | Flow execution | $0.0025/flat | 1x | $0.003 |
| STT | OpenAI Whisper | $0.006/min | 30s speech | $0.003 |
| LLM | deepseek-v4-pro (admin-ai) | ~$2-4/1M tokens | 500 tokens | $0.002 |
| TTS (voice) | Azure Neural | $12/1M chars (~1,500 chars/resp) | 30s speech | $0.005 |
| TTS (voice) | Resemble.ai (alt) | $0.0005/sec | 30s | $0.015 |
| Total (voice only) | ~$0.04 |
Song Mode Add-on
| Layer | Service | Unit Cost | Usage | Subtotal |
|---|---|---|---|---|
| Song generation | Suno API (3rd party) | $0.06/request | 1 song | $0.06 |
| Total (with song) | ~$0.10 |
Inbound Call Scenario (customer calls the roast line)
Same AI costs but Twilio inbound rate: $0.0085/min → $0.017 per call → ~$0.03 total (voice only)
Monthly Fixed Costs
| Item | Cost |
|---|---|
| Twilio local number | $1.15/mo |
| Twilio toll-free number (optional) | ~$2.00/mo |
| Server (Core, shares existing) | $0 (marginal) |
| Total fixed | ~$3/month |
Pricing Recommendation
Standard SaaS margins: 3-5x cost. This is a novelty product with viral potential — higher margins justified.
| Tier | Cost | Price | Margin |
|---|---|---|---|
| Basic Roast | $0.04 | $2.99 | 74x |
| Roast + Song | $0.10 | $4.99 | 50x |
| Premium (custom dialect + song) | $0.10 | $6.99 | 70x |
| Gift-a-Roast (send to friend) | $0.04 | $3.99 | 100x |
At these prices, even low volume (50 calls/mo) covers costs + Stripe fees. Viral adoption at 1,000+ calls/mo = $3,000-7,000 revenue vs $40-100 in API costs.
Notes
- Resemble.ai vs Azure TTS: Azure is cheaper ($0.005/call) but Resemble's voice agents ($0.001/sec) might have better regional accent quality. Test both.
- Suno API: No official public API confirmed. The $0.06/request is from third-party reverse-engineered APIs. Risky for production. LLM lyrics + TTS singing is the fallback.
- Stripe fees: ~2.9% + $0.30 per transaction. At $2.99, that's ~$0.39/call in fees.
- Legal: Needs Terms of Service with opt-out mechanism. Anti-harassment safeguards (can't call the same number more than once without consent).