
AI Agent & LLM Observability Platform

Build and deploy custom LLM applications in minutes
LangSmith: AI Agent & LLM Observability Platform. Vext: Build and deploy custom LLM applications in minutes. Both tools take different approaches to address similar needs.
LangSmith offers a freemium plan, while Vext is a paid tool.
The best choice between LangSmith and Vext depends on your specific needs. Compare their features, pricing, and target audience on this page to find the tool that best fits your use case.
Both are primarily designed for individuals. The choice depends on which specific features you need.
LangSmith offers: Cost tracking, Online LLM-as-judge and code evals, Tool and agent trajectory monitoring, Webhook and Pagerduty alerts. Vext offers: Low-code workflow builder, Custom data source integration, Scalable API deployment.
Based on our data, LangSmith currently enjoys greater popularity. However, popularity isn't the only factor — compare features to find the right tool for your needs.