Retell AI alternatives · AI Agents
Self-hosted alternatives to Retell AI
The Retell AI listing does not say it can be self-hosted. 19 of the 101 other AI agents in this directory can be self-hosted, according to their own sites.
Retell AI is a paid product with a free trial, starting at $0 to start, then $0.07 to $0.31 per minute for voice agents. 18 of them are free or have a free plan.
19 tools · Listings checked up to Nov 12, 2026 · Where the facts come from
The 12 closest to Retell AI
- Paid
Sema4.ai
Governed workspace for enterprise agents, projects and workflows
- Sema4.ai is self-hostable, according to its own site.
- Sema4.ai also covers workflow automation.
- Retell AI also covers chatbots.
- Free plan
Mem0
Memory layer that lets AI agents remember across sessions
- Mem0 has a free plan. Retell AI does not, though it has a free trial.
- Mem0 is open source and self-hostable, according to its own site.
- Retell AI also covers chatbots.
- Free plan · from $16/mo
MindStudio
No-code builder for AI agents, with 200+ models billed at cost
- MindStudio starts at $16 per month plus model usage, billed yearly. Retell AI starts at $0 to start, then $0.07 to $0.31 per minute for voice agents.
- MindStudio has a free plan. Retell AI does not, though it has a free trial.
- Only MindStudio lists a browser extension.
- MindStudio is self-hostable, according to its own site.
- Free plan · from $42.50/mo
AutoGPT
Open-source agent platform with a hosted team of AI Experts
- AutoGPT starts at $42.50 per month, billed yearly at $510 (Pro); $50 billed monthly. Retell AI starts at $0 to start, then $0.07 to $0.31 per minute for voice agents.
- AutoGPT has a free plan. Retell AI does not, though it has a free trial.
- AutoGPT is open source and self-hostable, according to its own site.
- AutoGPT also covers workflow automation.
- Free plan · from $590/yr
Dify
Open-source platform for building AI agents and agentic workflows
- Dify starts at $590 per workspace / year (Professional); $59 billed monthly. Retell AI starts at $0 to start, then $0.07 to $0.31 per minute for voice agents.
- Dify has a free plan. Retell AI does not, though it has a free trial.
- Dify is open source and self-hostable, according to its own site.
- Dify also covers workflow automation and no-code.
- Free plan · from $50/mo
Kortix
Open-source platform for running AI agents from a git repo you own
- Kortix starts at $50 per month for 5,000 credits (Credits), with unlimited members. Retell AI starts at $0 to start, then $0.07 to $0.31 per minute for voice agents.
- Kortix has a free plan. Retell AI does not, though it has a free trial.
- Only Kortix lists macOS, Windows, Linux, iOS and Android apps.
- Kortix is open source and self-hostable, according to its own site.
- Free plan
Langflow
Open-source visual builder for AI agents and MCP servers
- Langflow has a free plan. Retell AI does not, though it has a free trial.
- Only Langflow lists macOS, Windows and Linux apps.
- Langflow is open source and self-hostable, according to its own site.
- Langflow also covers templates.
- Free plan · from $21.25/mo
Sim
Open-source workspace for building and running AI agents
- Sim starts at $21.25 per user / month, billed annually ($255); $25 billed monthly. Retell AI starts at $0 to start, then $0.07 to $0.31 per minute for voice agents.
- Sim has a free plan. Retell AI does not, though it has a free trial.
- Only Sim lists a macOS app.
- Sim is open source and self-hostable, according to its own site.
- Free plan · from $29/mo
Agenta
Open-source workspace for building team AI agents and automations
- Agenta starts at $29 per month (Pro, unlimited users, 10,000 agent runs included). Retell AI starts at $0 to start, then $0.07 to $0.31 per minute for voice agents.
- Agenta has a free plan. Retell AI does not, though it has a free trial.
- Agenta is open source and self-hostable, according to its own site.
- Agenta also covers templates, workflow automation and no-code.
- Free plan
Lyzr
Enterprise agent platform with a free builder and custom plans
- Lyzr has a free plan. Retell AI does not, though it has a free trial.
- Lyzr is self-hostable, according to its own site.
- Lyzr also covers workflow automation and no-code.
- Retell AI also covers chatbots.
- Free plan · from $25/mo
Mastra
TypeScript framework for building and running AI agents
- Mastra starts at $25 per workspace / month. Retell AI starts at $0 to start, then $0.07 to $0.31 per minute for voice agents.
- Mastra has a free plan. Retell AI does not, though it has a free trial.
- Mastra is open source and self-hostable, according to its own site.
- Mastra also covers workflow automation.
- Free
OpenClaw
Open-source personal AI agent you run yourself and message in chat
- OpenClaw is free. Retell AI starts at $0 to start, then $0.07 to $0.31 per minute for voice agents.
- OpenClaw has a free plan. Retell AI does not, though it has a free trial.
- Only OpenClaw lists macOS, Windows, Linux, iOS and Android apps.
- OpenClaw is open source and self-hostable, according to its own site.
7 more that can be self-hosted
All 19 in one tableCommon questions
Is there a self-hosted alternative to Retell AI?
Yes. Sema4.ai, Mem0, MindStudio, AutoGPT, Dify, Kortix, Langflow, Sim and 11 more can be self-hosted, according to their own sites.
Can Retell AI be self-hosted?
The Retell AI listing does not say it can be self-hosted. The listing was checked on Nov 12, 2026 against the pages it cites.
Which of these AI agents are free?
Mem0, MindStudio, AutoGPT, Dify, Kortix, Langflow, Sim, Agenta and 10 more are free or have a free plan.
When was this checked?
Each listing shows its own date. On this page they run from Oct 5, 2026 to Nov 12, 2026. Vendors change prices and plans without notice, so confirm on their site before you buy.
This page is built from the listings. A tool is here because its listing says so, and the order is how close each is to Retell AI: the alternatives its listing names first, then the tools that share the most features with it.