
AI Agent & LLM Observability Platform

The high-performance engine for generative AI serving
LangSmith: AI Agent & LLM Observability Platform. PeriFlow: The high-performance engine for generative AI serving. Both tools take different approaches to address similar needs.
LangSmith offers a freemium plan, while PeriFlow is a paid tool.
The best choice between LangSmith and PeriFlow 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. PeriFlow offers: Continuous batching for high throughput, Iteration-level scheduling, Multi-GPU and multi-node execution, Support for popular open-source models like Llama 3.
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.