SIP.IO

Web · API

Freedom report

Two barsScore 6.1

Free tierA free tier is on its own pricing page
Open codeNo open-source code on record
Runs widely1 of 6 device platforms
DocumentedPlans, terms and facts published

SIP.IO is ranked #43 of 126 in call center software on Freedom251. It runs on API, Web. There is a free plan. A free trial is offered.

SIP.IO plans and pricing

All plans

Free tier Free Free trial credit · test phone number · full access to call flows, queues, and contact center · no credit card sip.io · 5 Oct 2026

Usage-based Not published Pay per minute for voice and per number; current pricing by contacting SIP.IO No per-seat licenses · no minimums · month-to-month · published rates are examples only, not the final rate card sip.io · 5 Oct 2026

Compared on call center software

Free plan: Yes
Inbound calling: Yes

Best SIP.IO alternatives

See all 20

Two bars Freshcaller Free tier No. 1$15/mo7.9 Two bars CallHub Free tier No. 2$0.05/mo7.0 One bar Genesys Cloud CX Paid plans No. 3$75/mo6.9 One bar Amazon Connect Paid plans No. 4—6.8 One bar 8x8 Contact Center Paid plans No. 5—6.8 One bar RingCentral RingCX Paid plans No. 6$65/mo6.7

The record

What it does: SIP.IO describes itself as an edge-native programmable voice and cloud contact center platform for UCaaS, CCaaS, and Voice AI.
Voice and contact center: Its listed capabilities include business phone service, SIP trunking, skills-based queues, agents, wallboard, and reporting.
Messaging: The platform lists SMS-to-email and inbound SMS webhooks, with webhook requests HMAC-signed.
Call recording: Call recording supports policy-driven recording, mid-call pause and resume, and an audited playback API.
Browser calling: SIP.IO lists an embedded softphone for browser-based WebRTC calling inside an app.
AI features: SIP.IO offers voice AI agents with human escalation and searchable call transcripts and AI summaries, including the option to bring your own AI provider.
Microsoft Teams: SIP.IO lists fully managed, white-label Microsoft Teams Direct Routing, with tenant provisioning by API.
Pricing limits: The published voice and number rates are labeled examples rather than the final rate card, and SIP.IO asks customers to contact it for current pricing.
Security: The Trust Center says API, dashboard, and SIP signaling use TLS 1.2 or higher, while voice media uses SRTP and WebRTC uses DTLS-SRTP.
Certification: SIP.IO says it is ISO/IEC 27001 certified and that SOC 2 Type II is on the roadmap and has not been audited yet.
Compliance limits: The Trust Center says HIPAA is not offered and SIP.IO has no Business Associate Agreement program.
Security support: SIP.IO invites vulnerability reports by email and says it aims to send an initial response within three business days.
Intended users: The documentation says SIP.IO is built for developers, BPOs and contact centers, and resellers or white-label operators.
Price from: Free

Where it ranks on Freedom251

Best Call Center Software in 2026#43 of 126
Best Interactive Voice Response Software in 2026#3 of 21

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Sources

sip.io/platform/· checked 5 Oct 2026
sip.io/pricing/· checked 5 Oct 2026
sip.io/trust/· checked 5 Oct 2026
sip.io/docs/getting-started/introduction/· checked 5 Oct 2026