# How LangChain uses Hex

**6 weeks** Legacy BI migration to Hex

As published on [hex.tech](https://hex.tech/customers/langchain/), June 2026. Captured by usedby on 2026-10-06.

- Company: [LangChain](https://www.usedby.ai/companies/langchain.md)
- Tool: [Hex](https://www.usedby.ai/tools/hex.md)
- Industry: [DevTools & Infrastructure](https://www.usedby.ai/companies/industry/devtools-infrastructure.md)
- Teams: Analytics Engineering, Customer Engineering, Deployed Engineering

## The use case: how LangChain deploys Hex

LangChain uses Hex's agentic notebooks and data apps as its single analytics platform, replacing a legacy BI tool. The Notebook Agent rebuilt dashboards from legacy YAML files, and teams across the company self-serve data, including customer 360 and deployed engineering dashboards.

Summary written by usedby from the source page, in English. The figures are those of Hex and LangChain, not ours.

> Within the first pass, the agent was able to recreate roughly 90% of the dashboards — including queries, charts, and structure — leaving only review and refinement to the team.

- **90%**: “90% of the migration completed by the Notebook Agent, converting YAML files from the legacy BI platform into production-ready Hex dashboards on first pass”
- **100%**: “100% of the company has access to data via Hex”
- **88%**: “88% reduction in build time for the customer maturity matrix, from an estimated 3 days in Python to 3 hours in Hex”
- **~30%**: “~30% increased customer onboarding speed”

> Context Studio changed how we manage agent performance. It surfaces gaps, proposes fixes, and suggests exactly where to add context. The agent improves without me auditing every conversation.
>
> Emily Hawkins, Head of Analytics Engineering

Source: [hex.tech](https://hex.tech/customers/langchain/), captured 2026-10-06.

> Being able to copy YAML files and give them to the Hex Agent to fully rebuild the dashboards helped us complete 90% of the migration. It was the best migration I've ever done.
>
> Logan Cochran, Analytics Engineer

Source: [hex.tech](https://hex.tech/customers/langchain/), captured 2026-10-06.

> Hex’s developer-first mentality has been awesome. Hex has great visual and design sensibility. The ability to use Hex in any way we choose is valuable because now we can connect into Hex via my favorite dev tools.
>
> Nithin Bose, VP of Customer Engineering

Source: [hex.tech](https://hex.tech/customers/langchain/), captured 2026-10-06.

> It took me a week to make several changes in our legacy BI tool that were nowhere near as impactful as everything I built with Hex's agents in a week.
>
> Neil Dahlke, Director of Deployed Engineering

Source: [hex.tech](https://hex.tech/customers/langchain/), captured 2026-10-06.

> Hex’s agent increased data access for everyone at LangChain, while giving us the confidence that users were getting accurate answers with trusted data.
>
> Emily Hawkins, Head of Analytics Engineering

Source: [hex.tech](https://hex.tech/customers/langchain/), captured 2026-10-06.

> Hex's agent made our legacy BI migration seamless. It rebuilt dashboards automatically, reducing months of manual work to six weeks.
>
> Bastian Gerstner, Analytics Engineer

Source: [hex.tech](https://hex.tech/customers/langchain/), captured 2026-10-09.

## Other AI tools used by LangChain

- [Pylon](https://www.usedby.ai/tools/pylon.md) — Observed
- [Rillet](https://www.usedby.ai/tools/rillet.md) — Observed
- [Tabs](https://www.usedby.ai/tools/tabs.md) — Observed

## Hex users in DevTools & Infrastructure

- [Algolia](https://www.usedby.ai/companies/algolia.md) — Confirmed
- [ClickUp](https://www.usedby.ai/companies/clickup.md) — Confirmed
- [Figma](https://www.usedby.ai/companies/figma.md) — Confirmed
- [Modal](https://www.usedby.ai/companies/modal.md) — Confirmed
- [Supabase](https://www.usedby.ai/companies/supabase.md) — Confirmed
- [Cursor](https://www.usedby.ai/companies/cursor.md) — Observed

## What usedby checked

We compared the story with its live page on 2026-10-24.

- Checked: the figure 6 weeks is on the page; its label is our wording.
- Checked: the passage quoted above is copied word for word from the page, near the name of LangChain.
- Checked: each number in our summary is printed on the page.
- Checked: the publication date is read from the page’s own metadata, never guessed.
- Checked: LangChain uses Hex. Confirmed line. Latest check across sources: 2026-10-24.
- Not checked: the result itself. We quote it; we did not measure it.

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Source: https://www.usedby.ai/case-studies/langchain-hex · How we check: https://www.usedby.ai/methodology