
AI pair programming in your terminal

AI Agent & LLM Observability Platform
Aider: AI pair programming in your terminal. LangSmith: AI Agent & LLM Observability Platform. Both tools take different approaches to address similar needs.
Both offer a free or freemium plan. Aider is free and LangSmith is freemium.
The best choice between Aider and LangSmith 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.
Aider is primarily designed for individuals, while LangSmith is built for individuals.
Aider offers: Terminal-based AI chat interface, Direct editing of local source files, Support for GPT-4o and Claude 3.5 Sonnet, Automatic git commits with auto-generated messages. LangSmith offers: Cost tracking, Online LLM-as-judge and code evals, Tool and agent trajectory monitoring, Webhook and Pagerduty alerts.
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.