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LangChain

The open agent platform to own your intelligence

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Domain Rating by Ahrefs, checked 3 Oct 2026, changed 3 Oct 2026.

What it is

LangChain provides open source frameworks and a commercial agent engineering platform for companies to build, control, and own their agent intelligence.

Quick answers

What is LangChain's mission?
LangChain's mission is to enable every company to own their intelligence. The company believes that LLMs are powerful and become more valuable when put to work through agents that can use data and take actions. Real agent advantage comes from adapting intelligence to a company's own workflows, customers, policies, and tools.
What are the main products offered by LangChain?
LangChain offers LangSmith, a commercial agent engineering platform with services for observability, evaluation, deployment, and monitoring. It also provides open source frameworks including LangChain for quick-start agents, LangGraph for production agents with low-level control, and Deep Agents for long-running autonomous tasks. Additionally, it offers Fleet for no-code agent building.
Does LangSmith use customer data to train models?
No, LangSmith does not use customer data to train models. Customer traces, prompts, and outputs remain private to their organization.
What deployment options are available?
LangSmith offers multiple deployment options including Cloud, Hybrid, and Self-Hosted environments. Cloud hosting is fully managed by LangChain. Hybrid deployments use a SaaS control plane with a self-hosted data plane. Self-hosted deployments are fully self-managed in a customer's VPC.
Is there a startup plan available?
Yes, LangChain offers a Startup Plan for early-stage companies building agentic applications with discounted rates and generous free trace allotments. Applicants can get up to $10,000 in credits.

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Key features

  1. Agent observability with step-by-step tracing
  2. Agent evaluation and scoring
  3. Agent deployment infrastructure
  4. Production monitoring with online evaluations
  5. Autonomous agent improvement with Engine
  6. Secure sandbox execution for agent-generated code
  7. LLM Gateway for model call control
  8. No-code agent builder Fleet
  9. Open source frameworks for agent development

Pricing

Developer plan is free for solo users with up to 5k base traces per month, then pay-as-you-go. Plus plan costs $39/seat/month with 10k base traces included. Enterprise plan offers custom pricing with advanced options.

More on this profile

LangChain has a free listing. The owner can unlock the full profile for $5:

Link metrics

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