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LangSmith Fleet

Agent platform

by LangChain

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).

Find alternatives to LangSmith Fleet

Included on both plans, but the overage rules differ and are NOT symmetric. langchain.com/pricing,"Developer: 5 LCUs included per organization each month. After the allowance is used, Fleet pauses new runs until the allowance resets or the organization upgrades to Plus." and "Plus: 25 LCUs included per organization each month. Additional usage is billed." So a Developer-plan organisation CANNOT buy overage and stay on Developer -- Fleet stops until the monthly allowance resets or the org upgrades to the paid Plus plan ($39/seat/month); metered pay-as-you-go overage exists on Plus only. The free allowance is genuine: the 5 LCU/month Developer allowance is a recurring free quota, not a trial.

What it does

• Agent orchestration

Sources

Pricing

Pricing page · 14 Sep 2026

Included on both plans, but the overage rules differ and are NOT symmetric. langchain.com/pricing,"Developer: 5 LCUs included per organization each month. After the allowance is used, Fleet pauses new runs until the allowance resets or the organization upgrades to Plus." and "Plus: 25 LCUs included per organization each month. Additional usage is billed." So a Developer-plan organisation CANNOT buy overage and stay on Developer -- Fleet stops until the monthly allowance resets or the org upgrades to the paid Plus plan ($39/seat/month); metered pay-as-you-go overage exists on Plus only. The free allowance is genuine: the 5 LCU/month Developer allowance is a recurring free quota, not a trial.

Description

Official documentation · 14 Sep 2026

What it does

Official documentation · 14 Sep 2026

Sold within

Pricing page · 14 Sep 2026

Developer plan row: 'Fleet: 5 LCU/month free (pauses after allowance used)'. Plus plan row: 'Fleet: 25 LCU/month free'. Available on both tiers, not gated behind Plus.

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 Engine Agent platform

  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).

• 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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