Yes, great point, difference is that this Langsmith is more focussed on dev users, rather than the PM/domain expert users.
And langsmith is also more on the observability, monitoring side, whereas we are more about testing & optimisation while in development
We see ourselves targeting different segments of the market.
1) Composo focusses on non-technical users like PMs or domain experts (in contrast to dev-focussed & open-source tools like Agenta).
2) With Composo, you build your application in code in a codebase (rather than building it in a low-code UI builder, like Humanloop). This enables teams to develop & test applications of any level of complexity, with no constraints on functionality.