It suits businesses seeking internet-based phone connectivity, including organizations with global voice needs.
Free trial AndroidiPhone & iPadWebAPI
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Best Voice APIs 2026
Facts read 19 Sep 2026 – 15 Oct 2026
Voice APIs connect software to phone calls and related voice features. This list helps buyers compare services for building or running calling tools across web, API, iOS, Android, self-hosted and Linux environments.
The standings: top 10
| Name | In a line | Record score | Price from | Try it free | Runs on | Facts read |
|---|---|---|---|---|---|---|
| 01 Telnyx SIP Trunking | It suits businesses seeking internet-based phone connectivity, including organizations with global voice needs. | 5.5 | — | Free trial | Android, iPhone & iPad, Web, API | 15 Oct 2026 |
| 02 Aculab Cloud | It suits businesses building communications applications through APIs, including teams seeking voice, video, messaging, or fax capabilities without specialist telephony… | 5.3 | Free plan | Free plan | Android, iPhone & iPad, Web, API | 7 Oct 2026 |
| 03 Wazo Platform | Wazo suits developers and organizations building communication services around their business or technical requirements. | 5.2 | Free plan | Free plan | Android, iPhone & iPad, Web, Linux | 9 Oct 2026 |
| 04 YateClient | 5.1 | Free plan | Free plan | Android, iPhone & iPad, Windows, Mac | 9 Oct 2026 | |
| 05 D7 Networks | D7 Networks suits organizations sending local or international messages, building WhatsApp workflows, or adding number verification and lookup. | 4.9 | — | Free trial | Web, API | 15 Oct 2026 |
| 06 Plivo Voice API | Plivo Voice API may suit developers adding voice functions to web or mobile applications. | 4.9 | $1,000 a month | Free trial | Android, iPhone & iPad, Web, API | 30 Sep 2026 |
| 07 Callr | 4.7 | €599 a month | Free trial | Android, iPhone & iPad, Web, API | 15 Oct 2026 | |
| 08 FreeSWITCH | FreeSWITCH suits teams building voice or video communication systems that can operate self-hosted infrastructure. | 4.7 | Free plan | Free plan | Windows, Mac, Linux, API | 3 Oct 2026 |
| 09 Infobip Voice API | The Calls API is aimed at developers building voice experiences for mobile or web applications. | 4.7 | — | Free trial | Android, iPhone & iPad, Web, API | 30 Sep 2026 |
| 10 SIP.IO | SIP.IO is aimed at developers, BPOs and contact centers, and resellers or white-label operators. | 4.7 | Free plan | Free plan | Web, API | 5 Oct 2026 |
The page is ordered by newest releases first, using figures published by makers. Nothing is scored.
02
Aculab Cloud
It suits businesses building communications applications through APIs, including teams seeking voice, video, messaging, or fax capabilities without specialist telephony…
AndroidiPhone & iPadWeb+2 Record5.3 Visit
03
Wazo Platform
Wazo suits developers and organizations building communication services around their business or technical requirements.
AndroidiPhone & iPadWeb+3 Record5.2 Visit
04
YateClient
AndroidiPhone & iPadWindows+2 Record5.1 Visit
05
D7 Networks
D7 Networks suits organizations sending local or international messages, building WhatsApp workflows, or adding number verification and lookup.
WebAPI Record4.9 Visit
6
Plivo Voice API
AndroidiPhone & iPadWeb+1 $1,000 a month Record4.9 Visit Plivo Voice API may suit developers adding voice functions to web or mobile applications.
8
FreeSWITCH
WindowsMacLinux+2 Free plan Record4.7 Visit FreeSWITCH suits teams building voice or video communication systems that can operate self-hosted infrastructure.
9
Infobip Voice API
AndroidiPhone & iPadWeb+1 — Record4.7 Visit The Calls API is aimed at developers building voice experiences for mobile or web applications.
10
SIP.IO
WebAPI Free plan Record4.7 Visit SIP.IO is aimed at developers, BPOs and contact centers, and resellers or white-label operators.
11
46elks
WebAPI €3 a month Record4.6 Visit It suits developers adding programmable messaging and calling to applications through an API.
14
Asterisk
LinuxAPISelf-hosted Free plan Record4.4 Visit Asterisk suits developers and organizations building communications systems who have working knowledge of Linux, scripting, networking, and telephony.
15
CallFire API
API $99 a month Record4.4 Visit CallFire API suits developers integrating CallFire telephony with CRM platforms, mobile apps, or backend website architecture.
16
Telnyx Voice API
AndroidiPhone & iPadWeb $500 a month Record3.6 Visit Telnyx Voice API may suit teams seeking a voice API with phone number support and a choice of usage-based or higher-tier plans.
Before you choose
Check plans and trial access
Compare the Free plan and Paid from fields before you shortlist a service. A free plan can support an initial evaluation without a paid commitment.
A free trial offers another way to assess a paid service. Pricing may be listed as a starting amount or provided on request.
Match calling functions
Check whether the API supports inbound calling, outbound calling or both for your use case.
Phone number support and SIP support can affect how the service connects to your calling setup.
Confirm your platform
Voice API tools on this list run on web, API, iOS, Android, self-hosted or Linux environments. Match the published platform options to your application.
Review limits and developer tools
Compare the concurrent call limit when you expect simultaneous calls. Call recording can matter when your workflow needs stored call audio.
SDK languages show which programming environments the maker supports. Check this field alongside your team's chosen stack.
Questions
What is a voice API?
A voice API is a software service for building or running phone calling features. This list compares calling, platform and developer fields.
Can I try a voice API for free?
Items on this list offer free plans or free trials. Check the service's Free plan and trial details before choosing.
Which platforms do these voice APIs support?
Listed platform options include web, API, iOS, Android, self-hosted and Linux. Platform coverage differs by item.
What calling features should I compare?
Compare inbound calling, outbound calling, phone number support, SIP support and call recording. Concurrent call limits and SDK languages are also listed.
How is pricing shown?
The list compares Free plan and Paid from fields. A maker may show a starting price or state that pricing is available on request.
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