Google Agent Development Kit vs LangSmith
| Google Agent Development Kit | LangSmith | |
|---|---|---|
| Free plan | Yes | No |
| Free trial | No | No |
| Paid from | Free | — |
| Open source | No | No |
| Platforms | api, Linux, macOS, self-hosted, Web, Windows | Web |
| Free plan | Yes | Yes |
| Deployment model | both | — |
| Visual agent builder | Yes | — |
| Multi-agent support | Yes | — |
| Knowledge grounding | Yes | — |
| Voice agent support | Yes | — |
| Human handoff | Yes | — |
Both are listed in Best AI Agent Platforms. On Samsung Mobile US Press, Google Agent Development Kit scores higher on our published basis.