Key takeaways: NextPhone gives you a dedicated AI receptionist number. Forward your Twilio calls to it — the AI answers 24/7, books appointments, qualifies leads, and sends you call summaries. Integration is call forwarding. No API work, no code, no number change. $199/month flat.
The Problem: You Have Twilio, But Calls Still Go Unanswered
Twilio handles the telephony. It provisions numbers, routes calls, manages SIP trunking. But Twilio doesn't answer your phone.
In our analysis of 130,175 customer service calls from 45 home services contractors over 7 months, we found that 74.1% went completely unanswered. That's three out of every four potential customers calling someone else — even when businesses had phone systems in place.
If you're a Twilio user, you've probably considered building an AI receptionist on top of it. The tutorials are everywhere: wire up TwiML, connect a WebSocket to OpenAI's Realtime API, build webhook handlers, deploy a server. It works. But it takes 40-80 hours of developer time, and then you're maintaining it forever.
There's a faster path. Forward your Twilio calls to an AI receptionist that's already built and running in production.
Twilio vs NextPhone: Feature Comparison
| Feature | Twilio DIY AI Stack | NextPhone |
|---|---|---|
| Setup time | 40-80 hours of development | 10 minutes |
| Monthly cost (1,000 calls) | $360+ variable | $199 flat |
| 24/7 answering | Only if you build and maintain it | Yes, included |
| Appointment booking | Build your own calendar integration | Built-in (Google Calendar, Calendly) |
| CRM integration | Write custom webhook handlers | Pre-built for HubSpot, Salesforce, Pipedrive, Zoho |
| Emergency detection | Build your own logic | Detects urgency keywords, routes immediately |
| Call summaries & transcripts | Build your own pipeline | Automatic after every call |
| SMS follow-ups | Build via Twilio Messaging API | Built-in |
| Ongoing maintenance | You manage servers, monitor uptime, fix bugs | Managed for you |
| Number change required | No | No — forward calls from your Twilio number |
The core difference: Twilio gives you building blocks. NextPhone gives you a working receptionist.
Try NextPhone AI answering service
AI answering service that answers, qualifies, and books — 24/7.
Get Started FreeHow to Forward Calls from Twilio to NextPhone
NextPhone gives you a dedicated AI phone number. You set up a forwarding rule in Twilio so incoming calls route to that number. The AI answers, handles the call, and sends you a summary. You keep your existing Twilio number.
Step 1: Get Your NextPhone AI Number
Sign up at NextPhone. You'll get a dedicated phone number for your AI receptionist. Configure the AI with your business information — hours, services, pricing, FAQs. The AI auto-extracts context from your website to speed this up.
Step 2: Set Up Call Forwarding in Twilio
In the Twilio Console:
- Go to Phone Numbers — Manage — Active Numbers
- Click your business number
- Under Voice Configuration, set "A call comes in" to TwiML Bin or Webhook
- Create a simple forwarding instruction that dials your NextPhone number
Or use Twilio Studio to create a forwarding flow with conditions — forward all calls, or only after-hours, or only when your team doesn't answer within 4 rings.
Common forwarding setups:
- Always forward: Every call goes to NextPhone AI immediately
- After-hours only: Calls forward to AI outside business hours (e.g., after 5 PM, weekends)
- Overflow: Calls forward to AI only when your team doesn't pick up within 3-4 rings
Step 3: AI Answers, You Get Summaries
When a call comes in:
- Twilio routes it to your NextPhone AI number
- AI answers in under 5 seconds
- AI handles the conversation — books appointments, answers questions, qualifies leads, detects emergencies
- You get an email and SMS with a call summary, full transcript, and recording
- Call data syncs to your CRM automatically via webhooks
Your callers still dial your Twilio number. They don't know anything changed. They just get someone who answers every time.
What NextPhone Handles
The AI manages the calls that make up the bulk of inbound volume:
- Answers 24/7. Every call answered in under 5 seconds. No voicemail, no hold music, no "press 1 for..."
- Books appointments. Checks your calendar availability and schedules directly. Sends confirmation texts with booking details.
- Qualifies leads. Asks the questions you'd ask — name, contact info, what they need, timeline, budget. Structures the data for your CRM.
- Sends summaries. After every call, you get an email with the transcript, summary, and action items. Tap to call back.
- Detects emergencies. 15.9% of calls in our data contain urgency language — "emergency," "urgent," "ASAP." The AI identifies these and routes immediately to your phone.
- Tracks callbacks. 25.4% of callers explicitly request callbacks. The AI logs every request and can send automated follow-up texts.
- Transfers to humans. When a caller needs a person or the conversation exceeds the AI's knowledge, it transfers seamlessly to your phone or team member.
Pricing: DIY Twilio Stack vs NextPhone
Building an AI receptionist on Twilio means paying for every layer of the stack. Here's what 1,000 calls per month (5,000 minutes) actually costs:
DIY Twilio + AI Stack
| Component | Unit Cost | Monthly (1,000 calls) |
|---|---|---|
| Twilio Voice (inbound) | $0.0085/min | $42.50 |
| OpenAI Realtime API | $0.06/min | $300.00 |
| Phone number | $1/mo | $1.00 |
| Webhook hosting | Variable | $20.00 |
| Total | $363.50 |
Plus: your developer's time building it, debugging WebSocket edge cases, handling retries, monitoring uptime, and maintaining the stack.
If you use VAPI instead of direct OpenAI integration, the cost drops to ~$123.50/month — but you're still managing the Twilio configuration, VAPI setup, and webhook integrations yourself.
NextPhone
| Component | Cost |
|---|---|
| AI receptionist (unlimited calls) | $199/mo |
| Phone number | Included |
| CRM integrations | Included |
| SMS follow-ups | Included |
| Call summaries & transcripts | Included |
| Total | $199/mo flat |
No per-minute charges. No overage surprises during high-volume months. No developer maintenance.
At 1,000 calls/month, NextPhone saves you $164.50/month versus the cheapest DIY option — and you're not spending any engineering time.
Try NextPhone AI answering service
AI answering service that answers, qualifies, and books — 24/7.
Get Started FreeFrequently Asked Questions
Do I need to change my Twilio phone number?
No. You keep your existing Twilio number. You set up a forwarding rule in the Twilio Console that routes calls to your NextPhone AI number. Callers still dial your Twilio number — they don't see any change.
Can I forward only some calls to NextPhone?
Yes. Twilio gives you full control over routing. Common setups: forward all calls, forward only after-hours calls, forward only when your team doesn't answer within a few rings (overflow), or forward calls from specific numbers. Use Twilio Studio or a simple TwiML condition.
Can I port my Twilio number to NextPhone instead?
Yes. If you'd rather not maintain a Twilio account at all, you can port your number directly to NextPhone. The process takes 7-10 business days. During porting, you can set up forwarding so calls are covered the entire time.
What if the AI can't handle a call?
The AI transfers to your phone (or any number you specify) immediately. It can also take a detailed message with the caller's number and reason, then send you an email and SMS notification. You set the routing rules — emergencies go to your cell, complex questions go to your office, after-hours messages go to email.
How does this compare to building with Twilio AI Assistants or VAPI?
Twilio AI Assistants and VAPI are platforms for building voice AI — they give you tools, but you still build and maintain the application. NextPhone is the finished product. If you want full control over the AI model, conversation logic, and voice pipeline, build on Twilio. If you want calls answered starting today with no development work, forward to NextPhone.