Google Agent Development Kit (ADK)vsLangflow
Generated from the two spec rows. Green marks the better value where a spec has a clear direction. Everything else is just different.
Google Agent Development Kit (ADK)
Google · Agent framework
OSSMCP
Panel
7.13 spec wins
- Reliability
- 7.0
- Usefulness
- 7.0
- Cost
- 7.3
- Longevity
- 7.0
“Ships Google Search grounding built in, so the agent can at least cite where it went wrong.”
Langflow
Langflow · Agent framework
OSSMCP
Panel
7.51 spec wins
- Reliability
- 6.3
- Usefulness
- 7.0
- Cost
- 8.5
- Longevity
- 8.0
“Shipping since February 2023, which in agent-framework years qualifies it for a pension and a plaque.”
Spec by spec
| Spec | Google Agent Development Kit (ADK) | Langflow |
|---|---|---|
| Architecture | ||
| Category | Agent framework | Agent framework |
| Runs | local, cloud | local, cloud |
| Platforms | macos, linux, windows | macos, linux, windows, web |
| Context window | not documented | not documented |
| Protocols | ||
| MCP client | Yes | Yes |
| MCP server | Yes | Yes |
| Capabilities | ||
| Runs terminal commands | Yes | No |
| Multi-file edits | No | No |
| Git operations | No | No |
| Browser control | Yes | No |
| Sandboxed execution | No | No |
| Multi-agent orchestration | Yes | Yes |
| Headless / CI mode | Yes | No |
| Models | ||
| Backbone | Gemini, any LiteLLM model, Ollama | any |
| Bring your own model | Yes | Yes |
| Local models | Yes | Yes |
| Cost | ||
| Pricing model | byok | free |
| Starts at | $0/mo | $0/mo |
| Free tier | Yes | Yes |
| Bring your own key | Yes | Yes |
| Openness | ||
| Open source | Yes | Yes |
| License | Apache-2.0 | MIT |
| GitHub stars | 21,692 | 155,446 |
Which one would each critic pick
| Critic | Google Agent Development Kit (ADK) | Langflow | Pick |
|---|---|---|---|
| El Juez | — | — | not enough reviews |
| El Amigo | 7.0 | 7.5 | Langflow — Pick Langflow when you need a colleague who does not write Python to see and change the flow; pick Dify if the goal is a finished application rather than a diagram. |
| El Crítico | 6.8 | 6.8 | no preference |
| El Profesor | 6.8 | 7.5 | Langflow — The visual layer sits over a Python runtime, so the graph is executed rather than transpiled, and the same graph can be exposed as tools to external clients over MCP. |
| La Inversora | 7.3 | 7.5 | Langflow — Over 150,000 stars and a pricing page that offers free self-hosting and a free hosted account, which is enormous distribution attached to an invisible revenue line. |
| La Jefa | 7.3 | 6.8 | Google Agent Development Kit (ADK) — As a dependency it is $0 for sixty engineers, support arrives through the Google Cloud contract we already hold, and adk web gives a mid-level engineer a debugger on day one; approved with conditions. |
| El Hacker | 7.5 | 8.8 | Langflow — MIT, one docker run to have it on localhost, local model endpoints supported, and it acts as both an MCP client and an MCP server, which almost nothing else does. |
Picks are derived from each critic's own scores. Humans vote on matchups on the duels page.