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View detailsMicrosoft Bot Framework
Microsoft framework for building enterprise chatbots across channels.
Microsoft Bot Framework is the developer framework for building enterprise chatbots across channels. It provides SDKs, tools, and services for creating bots that run on Teams, web chat, Slack, Facebook, and other channels, with the conversation logic written in code rather than a drag-and-drop editor.
Key Features
- Free open-source SDKs for C# and JavaScript
- Bots for Teams, web chat, Slack, and more
- Bot Framework Emulator for local testing
- Integration with Azure AI language and speech
- Handoff to human agents with full context
- Enterprise security and compliance through Azure
Pricing
| Plan | Price | Details |
|---|---|---|
| Bot Framework SDK | $0 | Open-source SDK and tools, free to download and use. |
| Azure AI Bot Service Free | $0 | Unlimited standard channel messages on the Azure free tier. |
| Azure AI Bot Service S1 | Pay as you go | $0.50 per 1,000 premium-channel messages; 10,000 free messages a month on the Free tier. |
Prices as listed in 2026 research. Always check the official site for the latest price — plans change. Free plan: Yes — it has a free plan.
Best for: developers building enterprise chatbots on Microsoft Azure.
Popular with: Developers, Business Owners
Popular with: Developers, Business Owners
How it works
The framework includes the Bot Builder SDK, a testing emulator, and connectors for Azure AI services such as language understanding and speech. Bots built with it can hand conversations to human agents, call business APIs, and plug into Microsoft 365 and Dynamics 365 workflows.
The SDK itself is free and open source, and hosting runs through Azure AI Bot Service, which has a free tier for standard channels. Note that Microsoft is retiring Bot Framework SDK support in December 2025 and steering developers toward the Microsoft 365 Agents SDK, so new projects should check the migration path.
Pros and Cons
✓ Pros
- Free, open-source SDK from Microsoft
- Deep integration with Teams and Microsoft 365
- Enterprise-grade security through Azure
- Full code control for complex bot logic
✗ Cons
- Bot Framework SDK support ends in December 2025
- Requires Azure knowledge to deploy and run
- No visual no-code builder for business users
Frequently Asked Questions
Is Microsoft Bot Framework free?
Yes — Microsoft Bot Framework has a free plan. Free SDK; Azure hosting from $0 with a free tier
What is Microsoft Bot Framework best for?
developers building enterprise chatbots on Microsoft Azure.
What kind of tool is Microsoft Bot Framework?
Microsoft Bot Framework is a AI Chatbots tool on VerlumoAI.
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View detailsLast reviewed: November 2026