Microsoft Bot Framework
Microsoft's open-source SDK and platform for conversational bots.
Drop your audio. Transcript in seconds. First transcript free, then $4 = 300 min
Upstream is archived. Microsoft Bot Framework’s repository has been set read-only by its owner, so there are no further releases, fixes, or security patches. The last commit landed 2025-12-29. It can still be cloned and run, and forks may be maintained elsewhere. See the repository.
Best for microsoft-stack developers building voice and chat bots integrated with Azure. Pricing: free SDK + Azure costs.
What it is
Microsoft Bot Framework is Microsoft's open-source SDK and platform for building conversational bots. Developers build the bot using the open-source SDK (in C# or JavaScript), then deploy on Azure Bot Service with integrations to Azure Cognitive Services for speech-to-text, language understanding, and text-to-speech. The framework supports Teams, Skype, Slack, Facebook Messenger, SMS, and custom channels. Bot Framework is widely used inside Microsoft-ecosystem-standard enterprises building internal and external bots. Pricing is free for the SDK plus Azure consumption costs. Pricing and product details listed here were last reviewed by Neugence on 2026-05-12; check the vendor site for current values before quoting.
Watch out for: Microsoft-ecosystem-leaning; Azure deployment required for production scale.
Install / use
dev.botframework.com — Free SDK, Azure deployment usage-priced
Features
| Speaker diarization | No |
| Word-level timestamps | No |
| Streaming / real-time | No |
| Languages supported | None |
| HIPAA eligible | No |
Links
Microsoft Bot Framework vs Whipscribe
| Feature | Microsoft Bot Framework | 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 | API | Web, API, MCP |
Alternatives to Microsoft Bot Framework
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