Cozzo-tested · Oct 20, 2026
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Retell AI vs ElevenLabs Agents: tested on real phone calls
Retell AI and ElevenLabs Agents tied at a 1.04 s median reply time on our phone calls. That’s within the noise of a test this size, so treat it as a near tie.
Reply time is the gap from the end of the caller’s speech to the agent’s first reply audio, timed from our recording of real phone calls (Twilio calling each vendor from a US number, Ashburn, Virginia (US East)), on each vendor’s default model and voice, with the same short dental-receptionist script. Twilio added about $0.01/min for the phone leg (SIP dial-out plus recording). Small samples: differences of a few hundredths of a second are noise. Ranking order comes only from the measured medians.
Retell AI
With Retell’s default voice and LLM; Retell lists $0.07–0.31/min depending on the voice and model you pick.
ElevenLabs Agents
Charged as Starter-plan credits; no extra dollars were billed.
- Full phone-call benchmark: all 8 platforms, method and limits.
- Retell AI vs ElevenLabs Agents: pricing and features side by side, with a cost-at-volume calculator.
- Methodology and how we test.