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SPECIFICTION
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46elks vs SIP.IO

46elks

46elks.com

SIP.IO

sip.io

Side by side

Figure46elksSIP.IO
Price from€3/moFree
Free planYesYes
Free trial—Yes
Open source——
WebYesYes
APIYesYes
Plans published52
Spec score · Voice APIs8.7 (#3)7.4 (#15)

Plans

46elks

  • Receive SMSFree
  • Connect calls to United Kingdom€0.02, paid once
  • Phone calls to United Kingdom€0.02, paid once
  • Pay as you go — SMS to United Kingdom€0.08, paid once
  • Virtual phone numbers€3 a month

46elks pricing →

SIP.IO

  • Free tierFree
  • Usage-basedPriced on request

SIP.IO pricing →

In their own words

46elks

46elks has no write-up on Specifiction yet; its figures are above.

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SIP.IO

SIP.IO is a programmable voice and cloud contact center platform for UCaaS, CCaaS, and Voice AI. Its listed services include business phone service and SIP trunking, alongside skills-based queues, agents, a wallboard, and reporting. Developers can embed a softphone in an app for browser-based WebRTC calls. Messaging includes SMS-to-email and inbound SMS webhooks, with webhook requests signed using HMAC. Call recording supports policy-based rules, pausing and resuming during a call, and playback through an audited API. Voice AI agents can escalate to a person; the platform also offers searchable call transcripts and AI summaries, with the option to use a customer's AI provider. SIP.IO lists managed, white-label Microsoft Teams Direct Routing with tenant setup by API. Its free tier includes trial credit, a test phone number, and access to call flows, queues, and contact center features without a credit card. Usage-based voice and number pricing is available by contacting SIP.IO; published rates are examples, not the final rate card. SIP.IO says it is ISO/IEC 27001 certified and that HIPAA and a Business Associate Agreement program are not offered.

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