LangSmith vs. PromptLayer 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 The first platform built for prompt engineers. Log OpenAI requests, search usage history, track performance, and visually manage prompt templates. manage Never forget that one good prompt. GPT in prod, done right. Trusted by over 1,000 engineers to version prompts and monitor API usage. Start using your prompts in production. To get started, create an account by clicking “log in” on PromptLayer. Once logged in, click the button to create an API key and save this in a secure location. After making your first few requests, you should be able to see them in the PromptLayer dashboard! You can use PromptLayer with LangChain. LangChain is a popular Python library aimed at assisting in the development of LLM applications. It provides a lot of helpful features like chains, agents, and memory. Right now, the primary way to access PromptLayer is through our Python wrapper library that can be installed with pip.
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 Prompt engineers seeking a platform to build, search for, track, and manage prompts
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 Supported
Screenshots and Videos View more images or videos	Screenshots and Videos View more images or videos
Pricing No information available. Free Version Not Supported Free Trial Not Supported	Pricing Free Free Version Supported Free Trial Not 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 PromptLayer United States promptlayer.com
Alternatives Arize AI	Alternatives Langtail
Braintrust Braintrust Data	Lunary
Griptape Foundry	Maxim
LangChain	Literal AI
Deep Agents LangChain View All	LangChain View All
Categories AI Agent Observability Supported AI Development Supported Context Engineering Supported Debugging Supported Software Testing Supported	Categories Context Engineering Supported LLM Evaluation Supported Prompt Engineering Supported Prompt Management Supported

Integrations AgentForge Supported Azure Marketplace Supported Datamorf Not Supported Deep Agents Supported Disco.dev Supported Ellipsis Not Supported GPT-3 Not Supported GPT-3.5 Not Supported GPT-4 Not Supported LangGraph Supported LiteLLM Not Supported Noma Supported OpenAI Not Supported Overmind Supported Reflexio Supported TierZero Supported Voker Supported Workers by Delos Not Supported ZenML Supported dcode Supported Show More Integrations View All 13 Integrations	Integrations AgentForge Not Supported Azure Marketplace Not Supported Datamorf Supported Deep Agents Not Supported Disco.dev Not Supported Ellipsis Supported GPT-3 Supported GPT-3.5 Supported GPT-4 Supported LangGraph Not Supported LiteLLM Supported Noma Not Supported OpenAI Supported Overmind Not Supported Reflexio Not Supported TierZero Not Supported Voker Not Supported Workers by Delos Supported ZenML Not Supported dcode Not Supported Show More Integrations View All 9 Integrations
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