LangChain is the platform for agent engineering. AI teams at Replit, Clay, Rippling, Cloudflare, Workday, and more trust LangChain's products to engineer reliable agents.

    <h2 class="flex whitespace-pre-wrap group font-semibold">Open source agent frameworks</h2>

    <Tabs>
        <Tab title="Python" icon="python">
            <CardGroup cols={3}>
                <Card
                    title="LangChain (Python)"
                    href="/oss/python/langchain/overview"
                    icon="link"
                    cta="Learn more"
                >
                    Quickly get started building agents, with any model provider of your choice.
                </Card>
                <Card
                    title="LangGraph (Python)"
                    href="/oss/python/langgraph/overview"
                    icon="circle-nodes"
                    cta="Learn more"
                >
                    Control every step of your custom agent with low-level orchestration, memory, and human-in-the-loop support.
                </Card>
                <Card
                    title="Deep Agents (Python)"
                    href="/oss/python/deepagents/overview"
                    icon="robot"
                    cta="Learn more"
                >
                    Build agents that can tackle complex, multi-step tasks.
                </Card>
            </CardGroup>
        </Tab>
        <Tab title="TypeScript" icon="js">
            <CardGroup cols={3}>
                <Card
                    title="LangChain (TypeScript)"
                    href="/oss/javascript/langchain/overview"
                    icon="link"
                    cta="Learn more"
                >
                    Quickly get started building agents, with any model provider of your choice.
                </Card>
                <Card
                    title="LangGraph (TypeScript)"
                    href="/oss/javascript/langgraph/overview"
                    icon="circle-nodes"
                    cta="Learn more"
                >
                    Control every step of your custom agent with low-level orchestration, memory, and human-in-the-loop support.
                </Card>
                <Card
                    title="Deep Agents (TypeScript)"
                    href="/oss/javascript/deepagents/overview"
                    icon="robot"
                    cta="Learn more"
                >
                    Build agents that can tackle complex, multi-step tasks.
                </Card>
            </CardGroup>
        </Tab>
    </Tabs>

    <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={4}>
        <Card
            title="Observability"
            href="/langsmith/observability"
            icon="magnifying-glass"
            cta="Learn more"
        >
            See exactly how your agent thinks and acts with detailed tracing and aggregate trend metrics.
        </Card>
        <Card
            title="Evaluation"
            href="/langsmith/evaluation"
            icon="chart-simple"
            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="terminal"
            cta="Learn more"
        >
            Iterate on prompts with version control, prompt optimization, and collaboration features.
        </Card>
        <Card
            title="Deployment"
            href="/langsmith/deployments"
            icon="rocket-launch"
            cta="Learn more"
        >
            Ship your agent in one click, using scalable infrastructure built for long-running tasks.
        </Card>
    </CardGroup>

    <Callout icon="lock" color="#DFC5FE" iconType="regular">
    LangSmith meets the highest standards of data security and privacy with HIPAA, SOC 2 Type 2, and GDPR compliance. For more information, see the [Trust Center](https://trust.langchain.com/).
    </Callout>

    <h2 class="flex whitespace-pre-wrap group font-semibold">Get started</h2>

    <CardGroup cols={4}>
        <Card title="Build your first agent with LangChain" icon="gear" href="/oss/python/langchain/quickstart" cta="Get started" />
        <Card title="Sign up for LangSmith" icon="screwdriver-wrench" href="https://smith.langchain.com/" 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="graduation-cap" 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="slack" href="https://www.langchain.com/join-community" cta="Join">
            Connect with other builders and get quick help.
        </Card>
        <Card title="Support portal" icon="user-headset" href="https://support.langchain.com/" cta="Visit">
            Submit tickets and track support requests.
        </Card>
        <Card title="LangSmith status" icon="screwdriver-wrench" href="https://status.smith.langchain.com/" cta="View">
            Real-time status of LangSmith services and APIs.
        </Card>
    </CardGroup>

</div>