
AI Agent & LLM Observability Platform

The open-source, self-hosted AI coding assistant
LangSmith: AI Agent & LLM Observability Platform. Tabby: The open-source, self-hosted AI coding assistant. Both tools take different approaches to address similar needs.
Both offer a free or freemium plan. LangSmith is freemium and Tabby is freemium.
The best choice between LangSmith and Tabby 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. Tabby offers: Self-hosted infrastructure, IDE integrations for VS Code and JetBrains, Private and secure data handling, Support for multiple LLMs.
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.