
AI Agent & LLM Observability Platform

The #1 AI powered study tool
LangSmith: AI Agent & LLM Observability Platform. Opal: The #1 AI powered study tool. Both tools take different approaches to address similar needs.
Both offer a free or freemium plan. LangSmith is freemium and Opal is freemium.
The best choice between LangSmith and Opal 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. Opal offers: AI-Powered Study Assistant, Personalized Learning & Repetition, Document-to-Quiz Conversion, Knowledge Training.
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.