Open Source Retell AI Alternatives
A curated collection of the 1 best open source alternatives to Retell AI.
The best open source alternative to Retell AI is Dograh. If that doesn't suit you, we've compiled a ranked list of other open source Retell AI alternatives to help you find a suitable replacement.
Retell AI alternatives are mainly AI Development Platforms but may also be AI Interaction & Interfaces. Browse these if you want a narrower list of alternatives or looking for a specific functionality of Retell AI.
An open source voice agent platform for teams that want to build, test and self-host production phone assistants.
For teams that want phone and voice assistants without a SaaS contract, a single Docker command brings Dograh up locally. The first assistant is created in the browser: choose inbound or outbound, name the bot, describe the use case in a few words, then talk to it.
Agents are drawn on a visual canvas with start nodes, agent nodes, global instructions, tools, transitions and end-call outcomes. Test Audio holds a spoken conversation in the browser, while Test Chat iterates in text and lets you edit or replay a turn so replies and node transitions are regenerated from that point on.
- Bring your own models: any LLM, speech to text and text to speech provider, or the bundled stack that needs no API keys.
- Telephony: Twilio, Vonage, Telnyx, Plivo, Vobiz, Cloudonix and Asterisk ARI, with human handoff on supported providers.
- Storage: call artifacts land in the bundled MinIO or any S3 compatible service.
- MCP server: coding assistants inspect agents, fetch node schemas, create workflows and save draft edits from plain language.
- SDKs: Python and Node packages create agents and place outbound calls from your own code.
QA nodes, knowledge bases, webhooks, embeds and tool calling round out the builder, and the Python backend keeps providers modular for customization.
The code is BSD 2-Clause licensed and a managed cloud runs the same platform. Anonymous usage data is collected unless telemetry is switched off before the startup script runs.
