
AI Agent & LLM Observability Platform

AI-powered browser for agentic, conversational web research and task automation.
LangSmith: AI Agent & LLM Observability Platform. Perplexity Comet: AI-powered browser for agentic, conversational web research and task automation.. Both tools take different approaches to address similar needs.
Both offer a free or freemium plan. LangSmith is freemium and Perplexity Comet is freemium.
The best choice between LangSmith and Perplexity Comet 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.
LangSmith is primarily designed for individuals, while Perplexity Comet is built for individuals.
LangSmith offers: Cost tracking, Online LLM-as-judge and code evals, Tool and agent trajectory monitoring, Webhook and Pagerduty alerts. Perplexity Comet offers: Integrated AI Assistant for web research & task automation, Agentic Capabilities for multi-step workflows, Multi-Model AI System ("Perplexity Computer"), Context Awareness & Tab Integration.
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.