# How Duolingo uses Glean

**500+ hours**: “Duolingo teams save 500+ hours every month”

As published on [glean.com](https://www.glean.com/resources/customer-stories/duolingo). Captured by usedby on 2026-10-07.

- Company: [Duolingo](https://www.usedby.ai/companies/duolingo.md)
- Tool: [Glean](https://www.usedby.ai/tools/glean.md)
- Industry: [EdTech & E-learning](https://www.usedby.ai/companies/industry/edtech-e-learning.md)

## What the story says

Duolingo uses Glean to search across its scattered work tools such as Google Drive, Slack, Confluence, and Zendesk. Employees also use Glean Chat, a conversational assistant, to get answers instead of asking colleagues, which reduces duplicated work.

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

> With Glean, Duolingo teams save 500+ hours every month — time that would have been wasted searching for information or duplicating work. That adds up to more than $1.1 million in yearly time savings, delivering a 5x return on investment from improved knowledge access.

- **$1.1 million**: “That adds up to more than $1.1 million in yearly time savings”
- **5x**: “delivering a 5x return on investment from improved knowledge access”

> Glean Chat is the most underrated feature within Glean,” said Art Chaidarun, Principal Software Engineer at Duolingo. “Similar to how some people now reach for ChatGPT before Google, Glean Chat can answer some questions even more effectively than a search can.
>
> Art Chaidarun, Principal Software Engineer

## What usedby checked

We compared the story with its live page on 2026-10-07.

- Checked: the figure 500+ hours is printed word for word on the page, near the name of Duolingo.
- Checked: the passage quoted above is copied word for word from the page, near the name of Duolingo.
- Checked: Duolingo uses Glean. Confirmed line. Latest check across sources: 2026-10-07.
- Not checked: the result itself. We quote it; we did not measure it.

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