Open-source framework and cloud for realtime voice, video and physical AI agents.
WebsiteProvisional comparison
LiveKit Agents vs OpenAI Realtime API
LiveKit Agents is provisional S-tier and OpenAI Realtime API is provisional A-tier on Voice Agents. Rankings are never for sale.
OpenAI's low-latency speech-to-speech API for voice agents.
Website| Field | LiveKit Agents | OpenAI Realtime API |
|---|---|---|
| Tier | S · provisional | A · provisional |
| Why | Realtime infrastructure standard for voice agents (14k+ stars on agents framework). | First-party speech-to-speech models; pairs with the Agents SDK. |
| Pricing | open-source / freemium cloud · starts at $50/mo (cloud) | usage-based (API) |
| GitHub stars | 14,757 | — |
| Last push | Oct 15, 2026 | — |
| Last verified | Oct 15, 2026 | Oct 15, 2026 |