Features
- Speech-native Ultravox model for voice-to-voice conversations
- Processes audio directly with latency under 500ms
- Natural turn-taking that handles interruptions and fillers
- SDKs for Web, iOS and Android
- Tool use and function calling during live calls
- Handles multiple languages and dialects
- Detects tone and emotion to adjust responses
- Remembers earlier conversation context
- Open-source Ultravox variants on Hugging Face
Pricing Details
💰 Pricing Model Item Details: Usage-based API Pricing / Credit System. General Concept: Pricing is typically based on "Minutes of Conversation" or "Tokens," with enterprise tiers for high-volume deployments. 🆓 Free Plan Details Feature: Developer Sandbox / Details: Access to test the Ultravox models with a limited number of minutes per month for free. Cost: Free to start ($0). 💳 Paid Plans (2026 Estimates) 🔹 Developer Pro Item: Price / Details: Approx. $0.05 - $0.10 per minute. Item: Features / Details: Access to high-concurrency voice streams, priority model access (Ultravox v0.7+), and full SDK support. 🔹 Enterprise Tier Item: Price / Details: Custom Quote. Item: Inclusions / Details: Dedicated infrastructure, private model fine-tuning, SOC2 compliance, and 24/7 technical support.