--- title: "Google ADK vs Langflow: Which is Better in 2026? | App Stack Builder" description: "Google ADK vs Langflow compared for 2026 — pricing, free tiers, features, pros & cons. See which agent framework tool is the better fit for your startup." source: https://appstackbuilder.com/compare/google-adk-vs-langflow retrieved: 2026-10-29 --- ![](https://www.google.com/s2/favicons?domain=google.github.io&sz=128) vs ![](https://appstackbuilder.com/logos/langflow.ico) # Google ADK vs Langflow: Which is Better in 2026? Agent Framework Choosing between [Google ADK](https://appstackbuilder.com/tools/google-adk) and [Langflow](https://appstackbuilder.com/tools/langflow)? Both are popular agent framework tools. Below we compare them on pricing, free tiers, features, and pros & cons so you can pick the right fit for your stack. Google ADK is for: Teams on Google Cloud, or working in Java, Go or Kotlin as well as Python, that want multi-agent systems with A2A support. Langflow is for: Teams who want to build and test agent and RAG flows visually, then serve them as APIs or MCP servers. Quick verdict There’s no single winner; pick on your constraint. Choose Google ADK if you work in Java or Go, or need the same framework across several languages. Choose Langflow if you want to prototype agent or RAG flows visually before writing code. ## Google ADK vs Langflow — Side by Side | | Google ADK | Langflow | | --------------------- | --------------------------------------------------- | -------------------------------------------------------------- | | Category | Agent Framework | Agent Framework | | What it is | Code library: multi-agent development kit | Visual builder for agent and RAG flows | | Languages | Python, Java, Go, TypeScript, Kotlin | Visual editor; Python components | | Licence | Apache 2.0 | MIT | | Managed / paid option | Vertex AI Agent Engine (Google Cloud, usage-based) | Self-host or Langflow Desktop | | Project status | Active; 1.x, 2.0 in progress | Active; 1.x | | Pricing | Free · then usage-based | Free | | Starting price | Free tier available | Free tier available | | Free tier | ✓ | ✓ | | Rating | 4.4 | 3.9 | | Best for | Agent Framework — Google Cloud, multi-language, A2A | Agent Framework — visual builder, RAG prototyping, MCP servers | ## Pros & Cons ![](https://www.google.com/s2/favicons?domain=google.github.io&sz=128) [Google ADK](https://appstackbuilder.com/tools/google-adk) * ✓Deep GCP / Vertex AI integration * ✓Strong multi-agent support * ✓Model-agnostic via LiteLLM * ✓Backed by Google * ✗Best value tied to Google Cloud * ✗Younger ecosystem than LangChain ![](https://appstackbuilder.com/logos/langflow.ico) [Langflow](https://appstackbuilder.com/tools/langflow) * ✓Fastest way to prototype a chain visually * ✓Exports to code rather than trapping you * ✓Free and self-hostable * ✗Visual editing gets unwieldy past a certain size * ✗Versioning a flow is harder than versioning code ## Key Features Compared ### Google ADK * ✓SDKs for Python, Java, Go and TypeScript, with Kotlin added later * ✓Multi-agent systems and Agent2Agent (A2A) protocol support * ✓Optimized for Gemini; other models through LiteLLM * ✓Deploy to Vertex AI Agent Engine, Cloud Run or GKE * ✓Apache 2.0 licence ### Langflow * ✓Drag-and-drop builder for agents and RAG flows * ✓Flows served as APIs, and exposable as MCP servers * ✓Works as an MCP client as well * ✓Self-host it, or run Langflow Desktop locally * ✓Owned by IBM through its DataStax acquisition * ✓MIT licence ### Choose Google ADK if… * ✓You work in Java or Go, or need the same framework across several languages. * ✓You’re on Google Cloud and want a managed runtime in Vertex AI Agent Engine. * ✓You need agents that talk to other agents over A2A. [Google ADK review & pricing ](https://appstackbuilder.com/tools/google-adk) ### Choose Langflow if… * ✓You want to prototype agent or RAG flows visually before writing code. * ✓Non-developers on your team need to edit flows. * ✓You want flows exposed as APIs or MCP servers without extra code. [Langflow review & pricing ](https://appstackbuilder.com/tools/langflow) ## Frequently Asked Questions Is Google ADK better than Langflow?⌄ There’s no single winner; pick on your constraint. Choose Google ADK if you work in Java or Go, or need the same framework across several languages. Choose Langflow if you want to prototype agent or RAG flows visually before writing code. What is the difference between Google ADK and Langflow?⌄ What it is — Google ADK: Code library: multi-agent development kit. Langflow: Visual builder for agent and RAG flows. Languages — Google ADK: Python, Java, Go, TypeScript, Kotlin. Langflow: Visual editor; Python components. Licence — Google ADK: Apache 2.0\. Langflow: MIT. Managed / paid option — Google ADK: Vertex AI Agent Engine (Google Cloud, usage-based). Langflow: Self-host or Langflow Desktop. Project status — Google ADK: Active; 1.x, 2.0 in progress. Langflow: Active; 1.x. Google ADK vs Langflow: which is cheaper?⌄ Google ADK pricing: Free · then usage-based. Langflow pricing: Free. Confirm current pricing on each tool's official site, as plans change. Which is rated higher, Google ADK or Langflow?⌄ In our catalog, Google ADK rates 4.4 out of 5 and Langflow rates 3.9 out of 5, so Google ADK has a slight edge on reviews. When should I skip both Google ADK and Langflow?⌄ Skip Google ADK if you don’t use Google Cloud and want a managed runtime. LangSmith Deployment, CrewAI AMP or Mastra Cloud are options. Skip Langflow if your flows will grow large and need code review and versioning. A code library such as LangGraph is easier to manage. Sources · tool facts checked October 2026 1. 1.[One Agent Development Kit, five languages (Google Cloud blog)cloud.google.com ](https://cloud.google.com/blog/topics/developers-practitioners/one-agent-development-kit-five-languages) 2. 2.[Langflowlangflow.org ](https://www.langflow.org/) See more options in our guide to the [best agent framework tools for startups](https://appstackbuilder.com/categories/agent-framework). ## Still not sure which to pick? Get a free, AI-powered tech stack — including the best agent framework pick for your budget and team — in 60 seconds. [Build my stack free ](https://appstackbuilder.com/build-stack)