Tooltestingvlatest

LangSmith Testing

by LangChain · freemium · Last verified 2026-03-17

LangSmith is a platform for debugging, testing, evaluating, and monitoring LLM applications. It enables developers to visualize execution traces of their chains and agents, collect datasets, and run automated evaluators to score model performance. The platform is designed to streamline the LLM development lifecycle from prototype to production.

https://smith.langchain.com ↗

B—Above Average

Adoption: B+Quality: AFreshness: ACitations: B+Engagement: F

Specifications

License: Proprietary
Pricing: freemium
Capabilities: LLM run tracing and debugging, Dataset creation and management, Automated and custom evaluators, A/B testing and model comparison, Human-in-the-loop feedback collection, Application performance monitoring, CI/CD integration for regression testing, Prompt engineering and management, Collaboration tools for teams
Integrations: [object Object], [object Object], [object Object], [object Object], [object Object], [object Object]
Use Cases: [object Object], [object Object], [object Object], [object Object], [object Object]
API Available: Yes
SDK Languages: python, javascript
Deployment: cloud, self-hosted
Rate Limits: Free tier: 5k traces/month; paid plans scale up
Data Privacy: SOC 2 compliant; enterprise VPC deployment available
Tags: llm-evaluation, llm-testing, llmops, observability, tracing, langchain, prompt-engineering, rag-evaluation, model-monitoring, ci-cd, debugging
Added: 2026-03-17
Completeness: 1%

Index Score

66.2

Adoption

Quality

Freshness

Citations

Engagement

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