AI voice agent pricing — cost per minute (2026)
Ranked by combined score: ease of use, value for money, feature depth and support quality. Monetized CTAs are marked — rankings are never paid.
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AI Voice Agents category leaderboard
The ai voice agents leaderboard below ranks the 3 tools we track whose core job is ai voice agents. Score combines ease of use, value for money, feature depth and support. Prices are entry list price, verified and dated per tool.
| # | Tool | Score | From | Free plan | Best for | |
|---|---|---|---|---|---|---|
| 1 | SSynthflow AI | 4.2/5 | $29/mo | No | Non-technical teams and agencies that want a drag-and-drop AI phone agent with CRM integrations out of the box | Review → |
| 2 | RRetell AI | 4.2/5 | $0/mo | Yes | Teams that want full control of an AI phone agent (API-first) and pure usage-based pricing with no monthly seat fee | Review → |
| 3 | VVapi | 4.1/5 | $0/mo | Yes | Developers who want maximum control over the voice stack (choose your own STT, LLM and TTS providers) | Review → |
Synthflow AI alternatives · How we score · Full pricing index
Head-to-head comparisons
FAQ — ai voice agents
What is the best ai voice agents tool for small business?
Based on our combined scoring (ease of use, value, features, support), Synthflow AI ranks first in AI Voice Agents (2026). The right pick still depends on your volume and whether you need a free plan — compare the table above.
Which ai voice agents tool is cheapest?
Retell AI starts at $0/mo, the lowest entry price we track in AI Voice Agents. Always check the billing unit (per contact, per execution, per email) — it changes real cost at scale.
Are there free ai voice agents tools?
2 of the 3 tools we track in AI Voice Agents offer a free plan. Free tiers are good for testing, but verify send/usage limits before committing a workflow.
How are these ai voice agents tools ranked?
Each tool is scored 1–5 on ease of use, value for money, feature depth and support, then combined. Pricing is verified and dated — see our methodology. Rankings are never paid placement.