Enterprise voice AI, then bring your own phones.
Synthflow is a capable voice AI platform built to plug into a PBX, a contact centre or a Twilio account you already run, sold on enterprise contracts. Uniden Voice is the phone system and the AI together, hosted in Australia, from $49 a week.
AI Agents built inDesk phones and appsQueues, IVR and ring groupsAustralian supportNo contract
Follow one calllive
Synthflow, plugged into your stack integration
📞Caller
☁Twilio or SIP
🤖Synthflow
🔌Your PBX
❓Your team?
Transfers depend on the PBX you connect3 vendors
Uniden Voice, AI built into the phone system native
📞Caller
✦Uniden Voice AI + PBX
👥Right person
Answered, handled, handed to a human in one systemone hop
Synthflow is serious voice AI
Synthflow runs tens of millions of calls a month, carries SOC 2, GDPR, HIPAA and ISO 27001, and documents integrations with 3CX, RingCentral, Dialpad, Aircall, 8x8, Genesys and Five9. For a large contact centre with an engineering team, it is a strong platform.
Mature platform at very high call volumes
SOC 2, HIPAA, GDPR and ISO 27001
Deep PBX and contact centre integrations
No code flow designer plus API
Built to sit on a phone system. Priced for enterprises.
Synthflow positions itself as a layer that connects to your PBX, not a replacement for one. You bring the numbers, the trunks and the team phones.
01
🏦
From US$30,000 a year
Synthflow's pricing page lists Enterprise starting at US$30,000 annually, sales led. Uniden Voice AI Agents are from $49 a week, no contract.
02
🔌
You supply the telephony
Numbers come from Synthflow, your own Twilio account, or SIP trunking to your PBX, with SIP and PBX on Enterprise. Australian numbers need an Australian address.
03
🌏
Data in the US or EU
Synthflow documents US and EU customer regions only, with no Australian region listed. Uniden Voice runs on Australian infrastructure.
An AI agent needs a phone system underneath it. You can buy two, or one.
Synthflow needs a phone system and a telephony provider around it. Uniden Voice is all three in one account.
Synthflow + a phone system
AI platform + telephony + PBX
- Enterprise from US$30,000 a year
- Numbers via Synthflow, Twilio or SIP
- Transfers work through your connected PBX
- No handsets or staff apps of its own
- Data regions US or EU only
- Support and billing in a foreign timezone
Uniden Voice
One platform, AI native
- AI Agents answer on your own numbers, no divert
- Warm transfer into a team, queue or extension
- Time conditions, IVR and queue overflow decide when AI answers
- Uniden desk phones, Desktop App and Mobile App for staff
- SMS, recordings and AI summaries in one call log
- One Australian provider, one bill, no contract
What happens when the caller needs a real person?
This is where AI-only services show the join. An AI agent that lives inside your phone system puts the caller straight through to the right team, on the same system.
Synthflow AI only
Hi, my invoice looks wrong. Can I talk to someone?
Let me transfer you. One moment.
Can you just put me through?
↪ SIP transfer out to a separate PBX
Sorry, I'll make sure they get your message.
✕ Context lives in Synthflow, the call lives in the PBX
Uniden Voice AI Agent native
Hi, my invoice looks wrong. Can I talk to someone?
Of course. I'll put you through to our accounts team now and let them know it's about your invoice.
✓ Transfer to Accounts ring group
✓ Warm handover, context spoken first
Perfect, thanks.
✓ Recording, transcript and summary in the call log
Uniden Voice vs Synthflow, line by line
| What you need | Synthflow | Uniden Voice |
|---|---|---|
| What it is | ✕Voice AI platform for PBXs and contact centres | ✓Cloud phone system with AI Agents built in |
| Price | ✕Enterprise from US$30,000 a year | ✓From $49 a week, no contract |
| Telephony | ~Synthflow numbers, Twilio or SIP trunk | ✓Included: numbers, porting, 1300 and 1800 |
| Desk phones and staff apps | ✕Not offered | ✓Uniden handsets, Desktop and Mobile App |
| Queues, ring groups, IVR for staff | ✕Via your PBX | ✓Included |
| Transfer to your team | ~Phone and SIP transfer to your PBX | ✓Native warm transfer, same system |
| Data region | ✕US or EU | ✓Australian infrastructure |
| Who builds it | ~No code designer, API, often an agency | ✓Agent Studio, and we build the first with you |
Synthflow details from synthflow.ai pricing and docs.synthflow.ai (telephony, customer region), checked 28 September 2026. Price in USD.
system for calls, AI, apps, SMS and routing
a week, from, for unlimited AI agents
phone system features included
lock-in contracts, keep your numbers
The AI contract is only the first line of the bill
Synthflow is priced for enterprises and assumes you already run the telephony and the PBX. Those are separate suppliers.
Synthflow route: what you end up paying for
Synthflow Enterprisefrom US$30,000/yr
Telephony: numbers, Twilio or SIP trunksseparate
PBX for your teamseparate
Handsets and staff appsseparate
Agency or developer to build flowsoften extra
Suppliers to manage3+
Uniden Voice: one account
Cloud phone system, 50+ features, desktop and mobile appsper user
AI Agents: unlimited agents, Agent Studio, trainingfrom $49/wk
AI talk time, reduced with call bundlesper minute
Number porting and setupfree
Lock-in contractnone
Suppliers to manage1
Six reasons AI belongs inside the phone system
One number, no forwarding chain
Calls land on your Uniden Voice number and the AI answers there. No divert from your telco to a second supplier, no extra hop, no caller ID lost along the way.
Transfers that reach a person
The agent transfers into a team, queue or extension on the same system, warm, with the context spoken. Not a fresh outbound call to someone's mobile.
Routing decides when AI answers
Point a time condition, an IVR option or a queue overflow at the agent. AI takes after hours and the overflow while your team keeps the calls they want.
Your team is on the same system
Desk phones, the Desktop App and the Mobile App all share one call log, so staff see the AI's recording, transcript and summary where they already work.
One bill, one support line
Phones, numbers, AI and integrations come from one Australian provider. When something is wrong there is one number to call and no finger pointing.
Priced for small business
Unlimited AI agents from $49 a week on top of your phone plan. Talk time by the minute, bundles to bring it down, and no contract.
Uniden Voice vs Synthflow: common questions
Is Synthflow a business phone system?
No. Synthflow is a voice AI platform that connects to phone numbers, Twilio or a SIP trunk and to an existing PBX or contact centre. It has no handsets, staff apps, extensions or queues of its own. Uniden Voice is a phone system with AI Agents built in.
How much does Synthflow cost?
Synthflow's pricing page lists an Enterprise plan starting at US$30,000 a year, scoped by volume, concurrency, telephony and integrations. Uniden Voice AI Agents are from $49 a week for unlimited agents, with AI talk time billed by the minute and no contract.
Where does Synthflow store data?
Synthflow's documentation lists US and EU customer regions. No Australian region is listed. Uniden Voice runs on Australian infrastructure, and your knowledge files, recordings and transcripts belong to your account.
Do I need a developer for Uniden Voice AI Agents?
No. Agent Studio is built for business owners and office managers. You set the voice, knowledge, skills and tools in plain English, and training is included: we build and test the first agent with you.
Enterprise grade AI, small business simple.
The phone system, the numbers, the apps and unlimited AI Agents in one Australian account. Book a demo or sign up online.
1300 881 662 ·
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Competitor details were checked against each provider's public website on 28 September 2026 and may have changed since. Prices are as published, in the currency shown. Product names are trademarks of their owners and are used here for comparison only.