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LangSmith

byLangChain
in
5.0
Market Presence: AI Application Development Platforms, AI Evaluation and Observability Platforms

Overview

Product Information on LangSmith

Updated 13th October 2025

What is LangSmith?

LangSmith is a software designed to support the development, testing, and monitoring of language model applications. The software provides tools for evaluating performance, inspecting outputs, and tracking operations within language-driven systems. LangSmith enables users to analyze model outputs, identify errors, and optimize data flows, facilitating the management of application quality and reliability. By offering instrumentation and debugging capabilities, the software addresses challenges related to building robust and efficient language model-powered applications in business environments.

LangSmith Pricing

LangSmith software follows a usage-based pricing model that charges users based on the number of traces and tokens processed. The software offers tiered plans, including a free plan with limited usage and paid plans that provide higher usage limits and additional features. Enterprise options are available for organizations requiring customized usage and support. Pricing details vary according to selected plan and usage volume.

Overall experience with LangSmith

Engineer
500M - 1B USD, IT Services
FAVORABLE

“One of the best platforms for tracing, evaluation and improving AI Applications ”

5.0
Jun 29, 2026
This text serves as a placeholder and does not reflect the user’s review responses or opinions. This text serves as a placeholder and does not reflect the user’s review responses or opinions. This text serves as a placeholder and does not reflect the user’s review responses or opinions.
There are no reviews in this category.
CRITICAL

About Company

Company Description

Updated 18th March 2025

LangChain is centered on simplifying the process of creating LLM applications. The company provides products that assist developers in transitioning from initial ideas to functional code swiftly, thus expediting the application creation period. LangSmith, another creation of LangChain, is designed to aid every facet of the AI engineering lifecycle, lending to a rapid production process for applications.

Company Details

Updated 27th March 2025
Company type
Private
Head office location
United States
Number of employees
11 - 50
Website
langchain.com

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Key Insights

A Snapshot of What Matters - Based on Validated User Reviews

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Peer Discussions

LangSmith Reviews and Ratings

5.0

(1 Rating)

Rating Distribution

5 Star
100%
4 Star
0%
3 Star
0%
2 Star
0%
1 Star
0%
Why ratings and reviews count differ?
  • Engineer
    50M-1B USD
    IT Services
    Review Source

    One of the best platforms for tracing, evaluation and improving AI Applications

    5.0
    Jun 29, 2026
    Overall, has been very helpful in our workflow since integration. Much better visibility to the prompt, traces and llm reasoning, which makes the debugging and monitoring of AI assistants smooth.
  • Engineer
    50M-1B USD
    IT Services
    Review Source

    One of the best platforms for tracing, evaluation and improving AI Applications

    5.0
    Jun 29, 2026
    Overall, has been very helpful in our workflow since integration. Much better visibility to the prompt, traces and llm reasoning, which makes the debugging and monitoring of AI assistants smooth.
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Reviewer Insights for: LangSmith

LangSmith Likes & Dislikes

Like

The traces and evaluation side of it for the agents it is hosting. Very easily can monitor what the model is doing and pin-point the failure spots and address them and in general iterate faster.

Like

The traces and evaluation side of it for the agents it is hosting. Very easily can monitor what the model is doing and pin-point the failure spots and address them and in general iterate faster.

Like

The traces and evaluation side of it for the agents it is hosting. Very easily can monitor what the model is doing and pin-point the failure spots and address them and in general iterate faster.