OpenAI Realtime Agents SDK
by OpenAI
OpenAI's Agents SDK pattern over the Realtime API for voice-native assistants.
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TL;DR
Best for builders standardizing on OpenAI for speech-to-speech with tool use. Pricing: see vendor pricing.
Category
Transcription APIs
License
MIT
Stars
★ 7.0k
Last push
2026-01-07
Pricing
see vendor pricing
Platforms
Cloud, API
What it is
OpenAI's openai-realtime-agents reference repo demonstrates multi-agent voice patterns over the Realtime API — guardrails, handoffs, and tool-calling — with the official Agents SDK. It functions as the canonical starter for serious voice-native applications on OpenAI's stack and is widely forked as a base for Vapi or LiveKit Agents builds.
Best for: Builders standardizing on OpenAI for speech-to-speech with tool use.
Watch out for: Voice features tied to OpenAI Realtime quotas and limits.
Watch out for: Voice features tied to OpenAI Realtime quotas and limits.
Features
| Speaker diarization | No |
| Word-level timestamps | No |
| Streaming / real-time | No |
| Languages supported | None |
| HIPAA eligible | No |
Links
OpenAI Realtime Agents SDK vs Whipscribe
| Feature | OpenAI Realtime Agents SDK | Whipscribe |
|---|---|---|
| Category | Transcription APIs | Transcription APIs |
| Pricing | Not verified | $4–$24 one-time packs (credits never expire) · $2 single unlock · 60 min free on signup |
| Speaker diarization | Not verified | Yes |
| Word timestamps | Not verified | Yes |
| Streaming | Not verified | No |
| Languages | — | 99 |
| Platforms | Cloud, API | Web, API, MCP |
Alternatives to OpenAI Realtime Agents SDK
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