Microsoft Bot Framework (Voice)
Microsoft's bot orchestration SDK with voice channels via Direct Line Speech.
Microsoft's bot orchestration SDK with voice channels via Direct Line Speech.
Best for azure-native teams building bots that span Teams, web, and voice. Pricing: see vendor pricing.
What it is
Microsoft Bot Framework remains a mature SDK and bot service for enterprise conversational AI on Azure. The Direct Line Speech channel exposes a voice surface, and integration with Azure AI Speech provides ASR and TTS. Microsoft is steering new builds toward Copilot Studio (Power Virtual Agents) but Bot Framework is still widely deployed.
Watch out for: LLM-native experiences typically use newer Copilot/Power Virtual Agents stack instead.
Features
| Speaker diarization | No |
| Word-level timestamps | No |
| Streaming / real-time | No |
| Languages supported | None |
| HIPAA eligible | No |
Microsoft Bot Framework (Voice) vs Whipscribe
| Feature | Microsoft Bot Framework (Voice) | Whipscribe |
|---|---|---|
| Category | Transcription APIs | Transcription APIs |
| Pricing | see vendor pricing | free beta |
| Speaker diarization | — | Yes |
| Word timestamps | — | Yes |
| Streaming | — | No |
| Languages | — | 99 |
| Platforms | Cloud, API | Web, API, MCP |
Alternatives to Microsoft Bot Framework (Voice)
Whipscribe is a managed faster-whisper + whisperX service. If you want transcripts without running infrastructure, paste a URL or drop a file in the form below — you'll have a transcript in seconds.