
AI Agent & LLM Observability Platform
JAX library for modular gradient processing and optimization in deep learning research.
LangSmith: AI Agent & LLM Observability Platform. Optax: JAX library for modular gradient processing and optimization in deep learning research.. Both tools take different approaches to address similar needs.
Both offer a free or freemium plan. LangSmith is freemium and Optax is free.
The best choice between LangSmith and Optax 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 Optax 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. Optax offers: Modular building blocks for parametric model optimization, Implementations of popular optimizers (e.g., Adam, RMSprop, AdamW), Standard deep learning loss functions (e.g., `l2_loss`, `softmax_cross_entropy`), Supports optimizer schedules, gradient clipping, and gradient noise injection.
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.