CopilotKitvsGoogle Agent Development Kit (ADK)
Generated from the two spec rows. Green marks the better value where a spec has a clear direction. Everything else is just different.
CopilotKit
CopilotKit · Agent framework
OSS
Panel
7.21 spec wins
- Reliability
- 6.5
- Usefulness
- 7.3
- Cost
- 7.8
- Longevity
- 7.0
“It supports Angular, which in 2026 is the most human-in-the-loop decision on this page.”
Google Agent Development Kit (ADK)
Google · Agent framework
OSSMCP
Panel
7.16 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.”
Spec by spec
| Spec | CopilotKit | Google Agent Development Kit (ADK) |
|---|---|---|
| Architecture | ||
| Category | Agent framework | Agent framework |
| Runs | local, cloud | local, cloud |
| Platforms | macos, linux, windows, web | macos, linux, windows |
| Context window | not documented | not documented |
| Protocols | ||
| MCP client | No | Yes |
| MCP server | No | Yes |
| Capabilities | ||
| Runs terminal commands | No | Yes |
| Multi-file edits | No | No |
| Git operations | No | No |
| Browser control | No | Yes |
| Sandboxed execution | No | No |
| Multi-agent orchestration | Yes | Yes |
| Headless / CI mode | No | Yes |
| Models | ||
| Backbone | any | Gemini, any LiteLLM model, Ollama |
| Bring your own model | Yes | Yes |
| Local models | No | Yes |
| Cost | ||
| Pricing model | mixed | byok |
| Starts at | n/a | $0/mo |
| Free tier | Yes | Yes |
| Bring your own key | Yes | Yes |
| Openness | ||
| Open source | Yes | Yes |
| License | MIT | Apache-2.0 |
| GitHub stars | 37,665 | 21,692 |
Which one would each critic pick
| Critic | CopilotKit | Google Agent Development Kit (ADK) | Pick |
|---|---|---|---|
| El Juez | — | — | not enough reviews |
| El Amigo | 7.5 | 7.0 | CopilotKit — Pick CopilotKit when your interface has to reflect what the agent is doing right now; pick Dify if you want the agent and the whole application from one platform. |
| El Crítico | 6.8 | 6.8 | no preference |
| El Profesor | 6.8 | 6.8 | no preference |
| La Inversora | 7.3 | 7.3 | no preference |
| La Jefa | 7.0 | 7.3 | 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 | 7.8 | 7.5 | CopilotKit — MIT, npx copilotkit@latest create, self-hostable, and it reaches beyond React to Vue and React Native, which is more than most people in this ecosystem bother with. |
Picks are derived from each critic's own scores. Humans vote on matchups on the duels page.