Retell AIretellai.com
Platform for building, testing, and deploying AI phone agents, with pay as you go per minute pricing and modular LLM/voice choices.
- Green flag: Free plan
AI voice agent platform
4 tools · 3 with a free plan · 4 with an API · middle starting price $299 a month
$1$10$100$1,000
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Vapivapi.ai
Developer platform for building voice AI agents, charging a per minute hosting fee with models passed through at provider cost.
- Green flag: Free plan
- Red flag: Trains on your data
Bland AIbland.ai
Enterprise grade AI phone call platform for inbound and outbound voice agents, billed per minute of talk time.
- Green flag: Free plan
- Green flag: No card for trial
- Green flag: Doesn't train on your data
Synthflowsynthflow.ai
Enterprise voice AI platform for building inbound and outbound phone agents with CRM and contact center integrations.
- Red flag: Changed focus
- Red flag: No free plan
- Red flag: Trains on your data
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All tools in Customer Service: AI receptionists and customer service tools