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LangChain

LangChain · #13 most active of 19 in Agents & Automation

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Open-source orchestration for chains, agents and retrieval, plus hosted tracing.

Current version

1.0

Entry cost

Open source, LangSmith from $39/mo

Changes / 30d

0

Capabilities

  • Agent abstractions
  • LangGraph orchestration
  • LangSmith tracing
  • Evaluations
  • Deployment

Pricing

  • Open source

    Free

  • LangSmith Plus

    $39

  • Enterprise

    custom

    Free

Entry price over time

Not enough pricing history yet — we start charting from the second observation.

Geek mode

Models under the hood

  • Bring your own key

    Any

    disclosed

Context window

Depends on chosen model

Public API

yes

Multi-model routing

yes

Stack signals

  • Python
  • TypeScript
  • LangGraph

Shared model stack

Other tracked products running on the same foundation models — a quick read on how much of the catalog moves when one of these models changes.

green disclosed · amber inferred · grey unknown

Reported scale

Reference data. Each figure is whatever the source actually said — weekly users, downloads, revenue run-rate — with its own definition and date. These are not comparable between tools and are never used to rank anything.

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Change history

  • version

    LangChain 1.0 stabilises the agent and middleware APIs

    0.31.0

    source