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LangSmith Engine

Agent platform

by LangChain

Analyzes agent traces and recommends fixes. Part of the LangSmith platform (categorized under 'No-Code Agents', 'Observability', 'Evaluation' or 'Deployment infrastructure' depending on the module).

Find alternatives to LangSmith Engine

Marked 'N/A' on the free Developer plan; requires Plus ($39/seat/month) at minimum -- Plus row: 'Access to Deployment, Engine, and more', with Engine 'metered in LCUs' as an additional charge on top of the Plus subscription. No free allowance is named for Engine specifically.

What it does

• Agent orchestration

Sources

Pricing

Pricing page · 14 Sep 2026

Marked 'N/A' on the free Developer plan; requires Plus ($39/seat/month) at minimum -- Plus row: 'Access to Deployment, Engine, and more', with Engine 'metered in LCUs' as an additional charge on top of the Plus subscription. No free allowance is named for Engine specifically.

Description

Official documentation · 14 Sep 2026

What it does

Official documentation · 14 Sep 2026

Sold within

Pricing page · 14 Sep 2026

Developer plan row shows Engine as 'N/A'. Plus plan row: 'Access to Deployment, Engine, and more'; Engine usage is metered in LCUs as an additional charge.

Name

Official documentation · 14 Sep 2026

URL

Official documentation · 14 Sep 2026

Also from LangChain

• LangChain Developer tool

  Open-source framework for composing language-model calls, tools and retrieval into applications.

• LangGraph Developer tool

  Open-source library for building agents as explicit graphs of steps and state.

• LangSmith Platform

  Traces, evaluates and monitors language-model applications in development and production.

• LangSmith Context Hub Agent platform

  Versions and deploys prompts and agent context. Part of the LangSmith platform (categorized under 'No-Code Agents', 'Observability', 'Evaluation' or 'Deployment infrastructure' depending on the module).

• LangSmith Deployment Agent platform

  Deploys and operates production agents. Part of the LangSmith platform (categorized under 'No-Code Agents', 'Observability', 'Evaluation' or 'Deployment infrastructure' depending on the module).

• LangSmith Fleet Agent platform

  No-code agent building, deployment into Slack/Teams/Gmail, and human-in-the-loop approval controls. Part of the LangSmith platform (categorized under 'No-Code Agents', 'Observability', 'Evaluation' or 'Deployment infrastructure' depending on the module).

• LangSmith LLM Gateway Agent platform

  Governs model calls and spending across providers. Part of the LangSmith platform (categorized under 'No-Code Agents', 'Observability', 'Evaluation' or 'Deployment infrastructure' depending on the module).

• LangSmith Sandboxes Agent platform

  Runs agent-generated code in isolated virtual machines. Part of the LangSmith platform (categorized under 'No-Code Agents', 'Observability', 'Evaluation' or 'Deployment infrastructure' depending on the module).

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