LangSmith offers Free Trial, but Graft does not.
Pricing for LangSmith Starts at $0.5/month whereas for Graft Starts at $20/month.
LangSmith offers several advantages, including Observability for LLM apps, Testing for LLM apps, Open-source SDK, Flexible integration, Adaptable to different implementations and many more functionalities.
The cons of LangSmith may include a Limited to LLM applications, Restricted early access, Beta version risks, Relies on flexible adaptation. and No mention of cross-platform compatibility