Cozzo-tested · Oct 20, 2026
vs
Retell AI vs Bland AI: tested on real phone calls
On our phone calls, Retell AI replied faster: a 1.04 s median versus 1.86 s for Bland AI, a gap of 0.82 s.
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.
Bland AI
From Bland’s per-call price. Bland called our number, so no SIP dial-out was needed.
- Full phone-call benchmark: all 8 platforms, method and limits.
- Retell AI vs Bland AI: pricing and features side by side, with a cost-at-volume calculator.
- Methodology and how we test.