LangChain is the platform for agent engineering. AI teams at Clay, Rippling, Cloudflare, Workday, and more trust LangChain's products to engineer reliable agents.
<h2 class="flex whitespace-pre-wrap group font-semibold">LangSmith</h2>
[**LangSmith**](/langsmith/home) is a platform that helps AI teams use live production data for continuous testing and improvement. LangSmith provides:
<CardGroup cols={3}>
<Card
title="Observability"
href="/langsmith/observability"
icon="/images/brand/observability-icon-dark.png"
cta="Learn more"
>
See exactly how your agent thinks and acts with detailed tracing and aggregate trend metrics.
</Card>
<Card
title="Engine (Beta)"
href="/langsmith/engine"
icon="engine"
cta="Learn more"
>
Automatically detect and resolve recurring issues in your tracing projects.
</Card>
<Card
title="Evaluation"
href="/langsmith/evaluation"
icon="/images/brand/evaluation-icon-dark.png"
cta="Learn more"
>
Test and score agent behavior on production data or offline datasets to continuously improve performance.
</Card>
<Card
title="Prompt Engineering"
href="/langsmith/prompt-engineering"
icon="/images/brand/prompt-engineering-icon.png"
cta="Learn more"
>
Iterate on prompts with version control, prompt optimization, and collaboration features.
</Card>
<Card
title="Deployment"
href="/langsmith/deployment"
icon="/images/brand/deployment-icon-dark.png"
cta="Learn more"
>
Ship your agent in one click, using scalable infrastructure built for long-running tasks.
</Card>
<Card
title="LLM Gateway (Private beta)"
href="/langsmith/llm-gateway"
icon="route"
cta="Learn more"
>
Proxy LLM calls to enforce spend limits, redact sensitive data, and centrally manage provider credentials.
</Card>
</CardGroup>
<Callout icon="shield-lock" color="#4F46E5" iconType="regular">
LangSmith meets the highest standards of data security and privacy with HIPAA, SOC 2 Type 2, and GDPR compliance. [Meet with our team](https://www.langchain.com/contact-sales) to learn more or visit our [Trust Center](https://trust.langchain.com/).
</Callout>
<h2 class="flex whitespace-pre-wrap group font-semibold">LangSmith Fleet</h2>
<Card
title="Fleet"
href="/langsmith/fleet/index"
icon="/images/brand/fleet-icon-dark.png"
cta="Learn more"
>
Create helpful AI agents without code. Start from a template, connect your accounts, and let the agent handle routine work while you stay in control.
</Card>
<h2 class="flex whitespace-pre-wrap group font-semibold">Open source agent frameworks</h2>
<Tabs>
<Tab title="Python" icon="brand-python">
<CardGroup cols={3}>
<Card
title="Deep Agents (Python)"
href="/oss/python/deepagents/overview"
icon="/images/brand/deep-agents-icon.png"
cta="Learn more"
>
Quickly build agents that can tackle any task.
</Card>
<Card
title="LangChain (Python)"
href="/oss/python/langchain/overview"
icon="/images/brand/langchain-icon.png"
cta="Learn more"
>
Customize the building blocks of your agents.
</Card>
<Card
title="LangGraph (Python)"
href="/oss/python/langgraph/overview"
icon="/images/brand/langgraph-icon.png"
cta="Learn more"
>
Control every step of your custom agent with low-level orchestration, memory, and human-in-the-loop support.
</Card>
</CardGroup>
</Tab>
<Tab title="TypeScript" icon="brand-typescript">
<CardGroup cols={3}>
<Card
title="Deep Agents (TypeScript)"
href="/oss/javascript/deepagents/overview"
icon="/images/brand/deep-agents-icon.png"
cta="Learn more"
>
Quickly build agents that can tackle any task.
</Card>
<Card
title="LangChain (TypeScript)"
href="/oss/javascript/langchain/overview"
icon="/images/brand/langchain-icon.png"
cta="Learn more"
>
Customize the building blocks of your agents.
</Card>
<Card
title="LangGraph (TypeScript)"
href="/oss/javascript/langgraph/overview"
icon="/images/brand/langgraph-icon.png"
cta="Learn more"
>
Control every step of your custom agent with low-level orchestration, memory, and human-in-the-loop support.
</Card>
</CardGroup>
</Tab>
</Tabs>
<h2 class="flex whitespace-pre-wrap group font-semibold">Get started</h2>
<CardGroup cols={4}>
<Card title="Build your first agent with LangChain" icon="settings" href="/oss/python/langchain/quickstart" cta="Get started" />
<Card title="Sign up for LangSmith" icon="tools" href="https://smith.langchain.com?utm_source=docs&utm_medium=cta&utm_campaign=langsmith-signup&utm_content=home-card" cta="Try LangSmith" />
<Card title="Build an advanced agent with LangGraph" icon="robot" href="/oss/python/langgraph/quickstart" cta="Get started"/>
<Card title="Enroll in LangChain Academy" icon="school" href="https://academy.langchain.com/" cta="Get started"/>
</CardGroup>
<h2 class="flex whitespace-pre-wrap group font-semibold">Additional resources</h2>
<CardGroup cols={4}>
<Card title="Community forum" icon="messages" href="https://forum.langchain.com/" cta="Join">
Ask questions, share solutions, and discuss best practices.
</Card>
<Card title="Community Slack" icon="brand-slack" href="https://www.langchain.com/join-community" cta="Join">
Connect with other builders and get quick help.
</Card>
<Card title="Support portal" icon="message-circle-question" href="https://support.langchain.com/" cta="Visit">
Submit tickets and track support requests.
</Card>
<Card title="LangSmith status" icon="tools" href="https://status.smith.langchain.com/" cta="View">
Real-time status of LangSmith services and APIs.
</Card>
</CardGroup>
</div>