
AI Agent & LLM Observability Platform

Democratizing AI with understandable, customizable, and collaborative multimodal intelligence systems.
LangSmith: AI Agent & LLM Observability Platform. Thinking Machines Lab: Democratizing AI with understandable, customizable, and collaborative multimodal intelligence systems.. Both tools take different approaches to address similar needs.
Both offer a free or freemium plan. LangSmith is freemium and Thinking Machines Lab is freemium.
The best choice between LangSmith and Thinking Machines Lab 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 Thinking Machines Lab is built for businesses and professionals.
LangSmith offers: Cost tracking, Online LLM-as-judge and code evals, Tool and agent trajectory monitoring, Webhook and Pagerduty alerts. Thinking Machines Lab offers: Open Science and Collaboration, Human-AI Collaboration for creative partnership, Advanced Multimodal AI Capabilities, Tinker API for efficient model fine-tuning.
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.