Show HN: I compared 15 AI agent frameworks across 4 production stacks

AI Agent Framework Compare, Side-by-Side AI Agent Framework Reviews AI Agent Frameworks, Compared Side-by-side comparison of 15 AI agent frameworks. Filter by use case (RAG, multi-agent, structured output) and language (Python, TypeScript, .NET). Updated weekly.

Use case All .NET stack AI agent node API integration HF ecosystem Next.js app Next.js integration OpenAI-first stack RAG RAG agent TypeScript stack broad integration chain composition chat interface code agent code generation agent content workflow data agent drag-drop chain builder edge runtime enterprise enterprise search eval function calling guardrails handoff pattern human-in-the-loop index management knowledge base minimal footprint multi-agent chat multi-step agent no-code no-code agent pipeline composition plugin production RAG production app prototype research role-based agent team self-host skill orchestration stateful workflow streaming UI task delegation team collaboration tool use tracing typed structured output validation workflow automation workflow builder workflow with steps Language All .NET / Python / Java Python Python / .NET Python / TypeScript TypeScript TypeScript / Python

15 frameworks LangGraph Graph-based control for stateful LLM agents with explicit transitions and human gates.

12k+ Python / TypeScriptcontrol: graphstate: explicit-graphMIT multi-step agenthuman-in-the-loopstateful workflowRAG agent CrewAI Role-based crew orchestration with sequential or hierarchical task delegation.

28k+ Pythoncontrol: crewstate: message-passingMIT role-based agent teamtask delegationresearchcontent workflow AutoGen Conversational multi-agent framework from Microsoft Research with deep tool use.

35k+ Python / .NETcontrol: conversationalstate: message-passingMIT multi-agent chatcode generation agentresearchtool use Pydantic AI Typed agents built on Pydantic validation. Production-first, structured output as first class.

6k+ Pythoncontrol: code-firststate: explicit-graphMIT typed structured outputfunction callingproduction appvalidation OpenAI Agents SDK OpenAI official SDK with handoffs, guardrails, and built-in tracing UI.

8k+ Python / TypeScriptcontrol: code-firststate: implicitMIT OpenAI-first stackhandoff patternguardrailstracing Mastra TypeScript-native framework with workflows, agents, RAG, and built-in eval.

10k+ TypeScriptcontrol: code-firststate: explicit-graphElastic License 2.0 TypeScript stackNext.js integrationworkflow with stepseval Vercel AI SDK TypeScript SDK with streaming UI primitives and provider abstraction.

13k+ TypeScriptcontrol: code-firststate: implicitApache 2.0 streaming UIchat interfaceNext.js appedge runtime LangChain The original LLM framework. Broad integration surface, mature ecosystem.

94k+ Python / TypeScriptcontrol: code-firststate: implicitMIT RAGprototypebroad integrationchain composition LlamaIndex Data-first framework. Strongest for RAG and structured data agent.

36k+ Python / TypeScriptcontrol: code-firststate: implicitMIT RAGindex managementdata agentknowledge base Haystack Pipeline-based framework from deepset. Production search and RAG focus.

17k+ Pythoncontrol: code-firststate: explicit-graphApache 2.0 production RAGpipeline compositionenterprise search Dify Open-source LLM app platform with visual workflow builder. Self-hostable.

53k+ TypeScript / Pythoncontrol: low-codestate: explicit-graphCustom (open-core) no-code agentworkflow builderteam collaborationself-host Flowise Drag-and-drop LangChain workflow builder. Open source, self-host first.

32k+ TypeScriptcontrol: low-codestate: explicit-graphApache 2.0 drag-drop chain builderno-codeprototypeself-host n8n Workflow automation with AI agent nodes. Strong integration library.

65k+ TypeScriptcontrol: low-codestate: event-drivenSustainable Use License workflow automationAI agent nodeself-hostAPI integration Semantic Kernel Microsoft enterprise SDK. .NET / Python / Java with plugin orchestration.

21k+ .NET / Python / Javacontrol: code-firststate: implicitMIT .NET stackenterpriseskill orchestrationplugin smolagents Hugging Face minimal agent framework. Code-as-action approach, small footprint.

12k+ Pythoncontrol: code-firststate: implicitApache 2.0 minimal footprintcode agenttool useHF ecosystem

Show HN: I compared 15 AI agent frameworks across 4 production stacks

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