Best Retell AI alternatives in 2026

Looking for an alternative to Retell AI? Whether you've outgrown it, find the pricing steep, or just want to weigh your options, these are the strongest ai agents & llm dev tools alternatives in 2026 — ranked on pricing, features, and who each one fits best. Retell AI itself has a free tier, so we've flagged where each option is cheaper, simpler, or more specialized.

1
Bland AI
Best for: smb
AI phone calling platform for businesses. A popular ai agents alternative to Retell AI with a genuinely usable free tier — free – custom. Particularly strong for smb.
4.3Free – CustomVisit
2
Lyzr
Best for: developers
If Retell AI feels like overkill or over-budget, Lyzr is a leaner option with a genuinely usable free tier. Agent framework for enterprise AI apps. Pricing: free – $19/mo.
4.3Free – $19/moVisit
3
LangGraph
Best for: developers
LangGraph goes head-to-head with Retell AI on features with a genuinely usable free tier. Build stateful, controllable agent workflows. Best suited to developers. Free.
4.5FreeVisit
4
Dust
Best for: smb
A well-rated ai agents pick. Custom AI agents for your company data. Dust offers a free plan and starts at free – $29/user/mo, making it a credible Retell AI replacement.
4.5Free – $29/user/moVisit
5
Dify
Best for: developers
Open-source LLM app development platform. A popular ai agents alternative to Retell AI with a genuinely usable free tier — free – $59/mo. Particularly strong for developers.
4.5Free – $59/moVisit
6
Stack AI
Best for: enterprise
If Retell AI feels like overkill or over-budget, Stack AI is a leaner option with a genuinely usable free tier. No-code platform for enterprise AI agents. Pricing: free – $199/mo.
4.5Free – $199/moVisit
7
AutoGen
Best for: developers
AutoGen goes head-to-head with Retell AI on features with a genuinely usable free tier. Multi-agent conversation framework. Best suited to developers. Free.
4.4FreeVisit
8
Flowise
Best for: developers
A well-rated ai agents pick. Low-code builder for LLM apps and agents. Flowise offers a free plan and starts at free – $35/mo, making it a credible Retell AI replacement.
4.4Free – $35/moVisit

Still considering Retell AI itself? Read our Retell AI review →

Frequently asked questions

What is the best Retell AI alternative?

Bland AI is our top-rated Retell AI alternative for 2026. AI phone calling platform for businesses. Free – Custom.

Is there a free Retell AI alternative?

Yes — Bland AI, Lyzr, LangGraph all offer a free tier you can start on without a credit card.

Why switch from Retell AI?

Common reasons are price, a simpler feature set, better fit for a specific use case, or platform support. Each tool above notes where it has an edge over Retell AI.