OpenAI Assistants API
GraduatedManaged agent platform with tools, files, and persistent threads
Most mature managed agent platform. Built-in code interpreter, file search, and function calling with persistent conversation threads. Best for teams wanting minimal agent infrastructure.
Claude MCP / Tool Use
GraduatedAnthropic's Model Context Protocol for universal tool integration
MCP is becoming the USB-C of AI tool integration. Open protocol lets Claude (and other models) connect to any data source or tool. Computer use for browser automation is unique.
Microsoft Copilot Studio
GraduatedEnterprise agent builder with Microsoft 365 and Azure integration
Best for Microsoft shops. Build agents that work across Teams, SharePoint, and Dynamics. Low-code builder for business users plus pro-code extensibility. Strong RBAC and compliance.
AutoGen
IncubatingMicrosoft's multi-agent conversation framework
Pioneered multi-agent conversation patterns. v0.4 rewrite (AgentChat) is cleaner and more composable. Good for complex workflows needing agent-to-agent collaboration. Strong research backing.
CrewAI
IncubatingRole-based multi-agent framework with simple, intuitive API
Most approachable multi-agent framework. Define agents with roles, goals, and backstories โ they collaborate on tasks. Great for rapid prototyping. CrewAI+ adds managed hosting.
LangGraph
IncubatingStateful agent workflows as controllable graphs from LangChain
Best for complex, stateful agent workflows with human-in-the-loop. Graph-based design gives explicit control over agent flow. checkpointing and replay built in. LangGraph Cloud for deployment.
OpenAI Swarm
SandboxLightweight experimental framework for agent hand-offs
Minimal, elegant multi-agent pattern from OpenAI. Agents hand off to each other via function calls. Educational and great for simple orchestration. Not production-grade โ use for learning.
Vertex AI Agent Builder
IncubatingGoogle Cloud's managed platform for building conversational agents
Best for GCP-native teams. Integrates with Google Search, datastores, and Gemini models. Dialogflow CX migration path. Good enterprise controls but less flexible than open frameworks.
Amazon Bedrock Agents
IncubatingAWS's managed agent service with knowledge bases and actions
Good for AWS shops needing managed agents with knowledge base retrieval. Multi-model support via Bedrock. Action groups enable tool use. Less flexible than open-source alternatives.
Phidata
SandboxPython framework for building AI agents with memory and tools
Clean Python-first API for building agents with built-in memory, knowledge bases, and tool use. Good developer experience. Growing ecosystem of pre-built tools and agent templates.