Top 9 Retell AI alternatives 2026
Looking for an alternative to Retell AI? Here are the best ai voice agent tools to consider — manually reviewed and ordered by entry price, cheapest paid plan first.
If you're moving away from Retell AI, the good news is that voice agent tools is a competitive space — there are 9 credible alternatives below. Vapi is a strong first stop. The right pick depends on whether you're optimizing for price, specific features, or ease of switching — shortlist two or three and compare them on the details that matter to your workflow.
Best alternatives to Retell AI
Compare on pricing, free tiers and features.
Developer platform for building and orchestrating voice AI agents over the phone.
All-inclusive voice agent platform with flat per-minute pricing and quick campaign setup.
No-code voice agent builder for teams that want phone AI without writing code.
Open-source library for building voice-based LLM agents on your own stack.
Run almost any open model behind an API call, billed by the second — cold starts included.
Black Forest Labs' image model family — open weights for tinkerers, a paid API for everyone else.
AI-powered translation and localisation platform.
Ask questions across your documents and get cited answers.
AI code review with a governance layer, aimed at orgs that need to prove standards are enforced.
Why each Retell AI alternative is worth considering
Retell AI alternatives: FAQ
What is the best alternative to Retell AI?+
Vapi is a leading alternative to Retell AI in the AI Voice Agent Tools category, best known for low base orchestration fee keeps the entry rate competitive. The full list is above — compare your shortlist on pricing and the features you actually need.
Are there free alternatives to Retell AI?+
Yes — 3 of the alternatives above offer a free plan or free tier, including Vocode, FLUX, Humata. Use the "Free" filter in the directory to see them all.
What is the cheapest alternative to Retell AI?+
Vocode is a strong low-cost option — it's free with a free tier to start. If budget is your main constraint, start there and upgrade only if you hit its limits.
How were these alternatives chosen?+
We start with tools in the same category as Retell AI (AI Voice Agent Tools), ordered by entry price (cheapest paid plan first), then fill out the list with closely-related voice agent tools tools. We don't carry star ratings — every tool is manually reviewed for quality and category fit before it's listed, and you compare your shortlist on the details that matter to you.