ElevenLabs vs OpenAI Realtime API

Pick two tools from the same category to compare side-by-side.

	ElevenLabs Voice AI platform offering text-to-speech, speech-to-text, and a conversational agents platform.	OpenAI Realtime API Speech-to-speech realtime model API for building low-latency voice agents.
Category	voice	voice
Vendor type	commercial	commercial
Pricing	freemium	usage
Strengths	+ Large multilingual voice library spanning thousands of voices and 29+ languages + Low-latency Flash model suited to realtime conversational use + Conversational agents platform spanning phone, chat, and messaging channels + Strong voice cloning and expressive text-to-speech quality	+ Single model handling speech-to-speech with reasoning and tool calling + Multiple transports including WebRTC, WebSocket, and SIP for telephony + Low-latency persistent sessions for natural turn-taking + Specialized variants for live translation and streaming transcription
Tradeoffs	− Proprietary, cloud-only models with no open-weight or self-hosted option − Credit-based pricing can be hard to predict at scale	− Locked to OpenAI models with no provider choice − Closed, cloud-only API − Realtime audio pricing can be costly at scale
Used in stacks	0	0