3CX vs OnSIP: what each really costs
Team size
Billing
3CX
Basic 8SC plan
$300
a year for 10 people · $25 a month
OnSIP
No plan for this billing option
No paid plan to compare for this billing option.
| 10 people | 3CX | OnSIP |
|---|---|---|
| Entry paid plan | Basic 8SC | No plan for this billing option |
| Vendor price | $300 per system/year, 8 simultaneous calls | |
| Monthly cost | $25 | |
| Annual cost | $300 | |
| Per user / year | $30 | |
| Billing commitment | Not recorded | Not recorded |
| Minimum seats | None stated | None stated |
| Free plan | No free plan listed | No free plan listed |
| Free trial | Not stated | Not stated |
Calculated by SpecEntry from official vendor prices. Taxes and optional add-ons are not included. Open each product page for every plan and the official source.
3CX vs OnSIP: features
Key features as each vendor lists them. A feature missing from a list does not mean the product lacks it.
3CX
- AI call agentsAgentic AI handles call routing, call screening and round-the-clock support.
- Built-in AI receptionistA virtual PA, receptionist and transcription are included in the same platform.
- Preconfigured trunks and phonesIT teams can deploy quickly using preconfigured SIP trunks and phones.
- Sentiment analysisAI-powered sentiment analysis and contact center functions are included in the system.
- Communication analyticsThe communication suite comes with integrated AI agents and analytics.
- On-premise deploymentCan be deployed on-premise so AI data stays local and under your control.
Source:3cx.com ·
OnSIP
- Three-way conferencingConnect two other callers at the same time.
- Auto attendantsSet up a touchtone menu of options for callers.
- Business hour rulesRoutes incoming calls by time of day and day of week.
- Call recordingRecords calls and uploads them to compatible cloud storage.
- HD conference suitesHost audio calls with up to 15 simultaneous callers.
- SMS and MMSSend and receive SMS and MMS in the OnSIP app.
- Real-time account changesMoves, adds and changes to features apply in real time.
Source:onsip.com ·
3CX vs OnSIP pricing questions
How much do 3CX and OnSIP cost?
3CX paid plans start at $300 per system/year, 8 simultaneous calls (Basic 8SC). OnSIP paid plans start at $18.95/user/month (Unlimited).
Is 3CX or OnSIP cheaper for 5 users?
3CX is cheaper for 5 users: $300 per year on Basic 8SC, against $599.40 per year for OnSIP on Pay-as-you-go. That is $299.40 less per year, before tax.
Is 3CX or OnSIP cheaper for 10 users?
3CX is cheaper for 10 users: $300 per year on Basic 8SC, against $599.40 per year for OnSIP on Pay-as-you-go. That is $299.40 less per year, before tax.
Is 3CX or OnSIP cheaper for 25 users?
3CX is cheaper for 25 users: $300 per year on Basic 8SC, against $599.40 per year for OnSIP on Pay-as-you-go. That is $299.40 less per year, before tax.