VoIPBin

Free plan APILinuxSelf-hostedWeb

What VoIPBin is

VoIPBin is an open-source CPaaS for voice, SMS, email, chat, and social communications, available through web, API, Linux, and self-hosted options. Its documentation covers PSTN, SIP, and WebRTC calls, along with SMS, email, and cross-channel conversations. Flows set how incoming and outgoing calls and messages are handled, including IVR menus, routing, and AI integrations.

AI features include voice agents, real-time speech-to-text and text-to-speech, call actions, and RAG knowledge bases. Users can choose from 11 curated models across OpenAI, Google, and Grok, or bring their own from 18 supported providers. Developer access includes a REST API, an OpenAPI 3.0 specification, and an official Go SDK. The complete platform can be self-hosted on one server with Docker Compose, and the project is MIT-licensed. The free plan includes 100 tokens per month, five extensions, five agents, two queues, two conferences, and one trunk. Listed usage charges are $0.01 per minute for PSTN calls, $0.01 per SMS or email, and $5 per phone number. LLM and STT services use the customer's external API keys.

Who it suits

VoIPBin suits teams needing voice and messaging workflows with IVR, routing, and AI features. Its API, Go SDK, and Docker Compose self-hosting option may appeal to developers managing communications infrastructure.

What it does well

Supports PSTN, SIP, and WebRTC calls.
Flows handle IVR menus, routing, and AI integrations.
Offers a REST API, OpenAPI 3.0 specification, and Go SDK.
The complete platform can be self-hosted using Docker Compose.
Free plan includes 100 tokens per month.

What to know first

PSTN calls cost $0.01 per minute.
SMS and email cost $0.01 per message.
Phone numbers cost $5 each.
Certain sending and purchasing actions require account verification.

Limits

The Free plan provides 100 tokens per month, five extensions, five agents, two queues, two conferences and one trunk. PSTN calls, SMS, email and phone numbers are charged separately, and LLM and STT services use the customer's external API keys.

Plans

Plan	Billed and limits	Price
Free	$0/month · 100 tokens/mo · 5 Extensions · 5 Agents · 2 Queues · 2 Conferences · 1 Trunks · 5 Virtual Numbers	Free
Unlimited	Contact Us · Unlimited tokens · Unlimited Extensions · Unlimited Agents · Unlimited Queues · Unlimited Conferences · Unlimited Trunks · Unlimited Virtual Numbers	On request

As voipbin.net lists them, read 11 Oct 2026. The maker's own page has the final word.

Getting started

Open the VoIPBin website or project
Create a Free account or select the Unlimited plan
Use the web interface, API, Linux deployment or self-hosted Docker Compose setup
Configure flows for IVR, routing and AI handling
Connect model or speech providers with supported API keys
Verify the account before enabling PSTN origination, real-number SMS, email, phone numbers or social messaging

Verdict

VoIPBin combines voice and digital communications with configurable flows, AI options, and developer access. Check the free-plan allowances, usage charges, verification requirements, and external-key requirement for LLM and STT services.

Questions

Is VoIPBin open source?

Yes. The project is licensed under the MIT License.

What does the Free plan include?

It costs nothing and includes 100 tokens monthly, five extensions, five agents, two queues, two conferences and one trunk.

Which platforms can run VoIPBin?

VoIPBin supports API, Linux, web and self-hosted deployment. The complete platform can run on one server with Docker Compose.

What usage charges apply?

PSTN calls cost $0.01 per minute, SMS and email cost $0.01 per message, and phone numbers cost $5 each.

Are external AI keys required?

LLM and speech-to-text services use the customer's external API keys.

Facts from VoIPBin's own pages

Account restrictions: Pricing says PSTN origination, real-number SMS, email sending, phone number purchases, and social-channel message sending require account verification. · voipbin.net, 11 Oct 2026
AI features: The AI product page describes voice agents, real-time speech-to-text and text-to-speech, built-in call actions, and RAG knowledge bases. · voipbin.net, 11 Oct 2026
AI providers: The AI page says users can choose from 11 curated models across OpenAI, Google, and Grok, or bring their own from 18 supported providers including Anthropic, Mistral, and DeepSeek. · voipbin.net, 11 Oct 2026
Charges and usage: Pricing lists PSTN calls at $0.01 per minute, SMS and email at $0.01 per message, phone number purchases at $5 each, and says LLM and STT services use the customer’s external API keys. · voipbin.net, 11 Oct 2026
Developer access: VoIPBin offers a REST API, an OpenAPI 3.0 specification, and an official Go SDK. · api.voipbin.net, 11 Oct 2026
Digital channel scope: voice_plus_digital · voipbin.net, 22 Sept 2026
Free plan: Yes · voipbin.net, 22 Sept 2026
Inbound calling: Yes · voipbin.net, 22 Sept 2026
Integrations: The AI product page names OpenAI, Google, Grok, Anthropic, Mistral, DeepSeek, Deepgram, ElevenLabs, and Cartesia among its model and speech-service options. · voipbin.net, 11 Oct 2026
IVR builder: Yes · voipbin.net, 22 Sept 2026
License: The VoIPBin GitHub project says the software is licensed under the MIT License. · github.com, 11 Oct 2026
Outbound dialer: Yes · voipbin.net, 22 Sept 2026
Product: VoIPBin describes itself as an open-source CPaaS for voice, SMS, email, chat, and social communications. · voipbin.net, 11 Oct 2026
Security: Its security documentation describes TLS, SRTP, JWT and Access Key authentication, role-based access control, and encryption at rest. · api.voipbin.net, 11 Oct 2026
Self-hosting: VoIPBin says the complete platform can be self-hosted on one server using Docker Compose. · voipbin.net, 11 Oct 2026
Support: The site directs users to [email protected] for help and verification requests. · voipbin.net, 11 Oct 2026
Voice and messaging: Its documentation lists PSTN, SIP, and WebRTC calls, plus SMS, email, and cross-channel conversations. · api.voipbin.net, 11 Oct 2026
Workflow automation: Flows define how incoming and outgoing calls and messages are handled, including IVR menus, routing logic, and AI integrations. · api.voipbin.net, 11 Oct 2026

Where VoIPBin stands on Freedom251

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