Features
Text-to-Speech abstraction with multiple provider support
Speech-to-Text with real-time transcription and language detection
Voice streaming with low-latency optimization and buffer management
Voice Activity Detection with smart detection and noise filtering
Built-in SIP server for phone system integration
Auto voice analytics and transcriptions
Unified API for all voice capabilities
Framework agnostic (PydanticAI, LangChain, LlamaIndex, custom agents)
Barge-in handling (user interruption management)
Tenant-based SIP routing for multi-tenant deployments
Call recording, retrieval, and search at scale
Sub-second latency architecture for real-time voice agents
Python, JavaScript, TypeScript, Go, Rust SDKs
Provider switching without vendor lock-in
Plugin architecture for easy integration
Ultra-realistic text-to-speech with expressive controls (sarcasm, whisper, giggle)
Voice cloning from audio samples or text prompts
10,000+ voices across 70+ languages
Music v2 generation from text prompts, up to 320kbps output
Sound effects and ambient audio generation from prompt or library
Scribe v2 speech-to-text with 98% accuracy and speaker diarization
Dubbing v2 for voice translation with watermark options
ElevenAgents: omnichannel conversational agents via voice, chat, email, WhatsApp
Low-latency models: Eleven Flash ~75ms, Eleven Turbo v2.5
Guardrails and workflows for agent deployment
Analytics and A/B testing for conversational agents
Image and video generation (Veo, Sora, Wan, Kling, Seedance)
Ads Engine for AI-powered ad production in ElevenCreative
Flows Agent for automated creative workflows
SynthID watermarking for AI-generated audio detection