LangSmith vs. Testlemon Comparison


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About Unexpected results happen all the time. With full visibility into the entire chain sequence of calls, you can spot the source of errors and surprises in real time with surgical precision. Software engineering relies on unit testing to build performant, production-ready applications. LangSmith provides that same functionality for LLM applications. Spin up test datasets, run your applications over them, and inspect results without having to leave LangSmith. LangSmith enables mission-critical observability with only a few lines of code. LangSmith is designed to help developers harness the power–and wrangle the complexity–of LLMs. We’re not only building tools. We’re establishing best practices you can rely on. Build and deploy LLM applications with confidence. Application-level usage stats. Feedback collection. Filter traces, cost and performance measurement. Dataset curation, compare chain performance, AI-assisted evaluation, and embrace best practices.	About Get real, relevant followers, increase impressions, and build your network - all in one place.
Platforms Supported Windows Not Supported Mac Not Supported Linux Not Supported Cloud Supported On-Premises Not Supported iPhone Not Supported iPad Not Supported Android Not Supported Chromebook Not Supported	Platforms Supported Windows Not Supported Mac Not Supported Linux Not Supported Cloud Supported On-Premises Not Supported iPhone Not Supported iPad Not Supported Android Not Supported Chromebook Not Supported
Audience Developers seeking a platform to design, build, and test their applications	Audience Users that want to monitor websites, debug APIs, and run automated tests
Support Phone Support Not Supported 24/7 Live Support Not Supported Online Supported	Support Phone Support Not Supported 24/7 Live Support Not Supported Online Supported
API Offers API Not Supported	API Offers API Not Supported
Screenshots and Videos View more images or videos	Screenshots and Videos No images available
Pricing No information available. Free Version Not Supported Free Trial Not Supported	Pricing $10/month Free Version Not Supported Free Trial Supported
Reviews/Ratings Overall 0.0 / 5 ease 0.0 / 5 features 0.0 / 5 design 0.0 / 5 support 0.0 / 5 This software hasn't been reviewed yet. Be the first to provide a review: Review this Software	Reviews/Ratings Overall 0.0 / 5 ease 0.0 / 5 features 0.0 / 5 design 0.0 / 5 support 0.0 / 5 This software hasn't been reviewed yet. Be the first to provide a review: Review this Software

Training Documentation Supported Webinars Not Supported Live Online Not Supported In Person Not Supported	Training Documentation Supported Webinars Not Supported Live Online Not Supported In Person Not Supported
Company Information LangChain United States www.langchain.com/langsmith	Company Information Testlemon Founded: 2024 Poland testlemon.com
Alternatives Arize AI	Alternatives Keysight Eggplant Keysight Technologies
Braintrust Braintrust Data	Boozang
Griptape Foundry	EasyQA ThinkMobiles
LangChain	MuukTest
Deep Agents LangChain View All	ZAPTEST ZAPTEST Inc. View All
Categories AI Agent Observability Supported AI Development Supported Context Engineering Supported Debugging Supported Software Testing Supported	Categories API Testing Supported Automated Testing Supported Debugging Supported Software Testing Supported Website Monitoring Supported

Integrations AgentForge Supported Azure Marketplace Supported Deep Agents Supported Disco.dev Supported GitHub Not Supported JFrog Xray Not Supported Jira Not Supported LangChain Supported LangGraph Supported Noma Supported OpenAI Not Supported Overmind Supported Prism Supported Reflexio Supported Slack Not Supported TierZero Supported Voker Supported ZenML Supported dcode Supported evalship Supported Show More Integrations View All 15 Integrations	Integrations AgentForge Not Supported Azure Marketplace Not Supported Deep Agents Not Supported Disco.dev Not Supported GitHub Supported JFrog Xray Supported Jira Supported LangChain Not Supported LangGraph Not Supported Noma Not Supported OpenAI Supported Overmind Not Supported Prism Not Supported Reflexio Not Supported Slack Supported TierZero Not Supported Voker Not Supported ZenML Not Supported dcode Not Supported evalship Not Supported Show More Integrations View All 5 Integrations
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