Retell AI

Agents 5.4/10

$0 to start with $10 free credits; AI voice agents $0.07–$0.31/min, chat $0.002+/msg, 20 free concurrent calls. Components: Retell voice infra $0.055/min, LLM (e.g. GPT-5.1) $0.04/

Retell AI scores 5.4/10 for free value in Agents. The main constraint: Paid — Pay-as-you-go from $0.07/min (voice agents). $0 to start with $10 free credits; AI voice agents $0.07–$0.31/min, chat $0.002+/msg, 20 free concurrent calls. Components: Retell voice infra $0.055/min, LLM (e.g. GPT-5.1) $0.04/min, TTS $0.015/min.

Category Agents Kind Paid plan

Free value score

5.4 / 10

Show the math

Overall 5.4/10

value = 5.4/100

weighted_components_v1

Execution 3/10

value = 10 $ one-time

fixed_log_v1

Connectivity 8.2/10

value = 8.2/100

policy_score_v1

Production controls 7.2/10

value = 7.2/100

policy_score_v1

Key metrics

1/mo Execution quota Uses stated quota when present; otherwise a conservative unpublished-quota floor.

2 Tool/model connectivity model, models

1 Production controls concurrent

$0.07/min

$10 free

20 conc

GPT-5.5 58 Best model

What you get

Paid — Pay-as-you-go from $0.07/min (voice agents). $0 to start with $10 free credits; AI voice agents $0.07–$0.31/min, chat $0.002+/msg, 20 free concurrent calls. Components: Retell voice infra $0.055/min, LLM (e.g. GPT-5.1) $0.04/min, TTS $0.015/min.

True per-second pay-as-you-go, no platform fee; ~$0.11/min for a GPT-4.1 voice agent

Sources

"$0.07-$0.31 / min for AI Voice Agents ... $0.002+/ msg for AI Chat Agents ... 20 Free Concurrent Calls"
https://www.retellai.com/pricing
"GPT-5.5 (xhigh) and GPT-5.5 (high) are the highest intelligence models"
https://artificialanalysis.ai/models

paid value agent-deployment

Open service ← All Agents