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Ultravox

Voice infrastructure / API
PricingPay As You Go $0/mo (first 30 min free, then $0.05/min); Pro $100/mo; Enterprise custom. SIP ~0.5¢/min.
Per-minute price$0.05/min
Free tier30 free minutes
Key featuresSpeech-native model; SIP; tokens-based 'Threads' pricing for text
Best forDevelopers wanting a flat per-minute speech-native model
Websitehttps://www.ultravox.ai
Date checked2026-10-16

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