# What AI does Duolingo use?

Duolingo uses 13 AI tools on usedby: 6 confirmed, 7 observed and 0 signals. Tools: Decagon, ElevenLabs, GitHub copilot, Glean, Textio, Vanta, Arize AI and BrightHire and 5 others. Latest check 2026-10-08: 12 of 13 public lines checked.

- Industry: [EdTech & E-learning](https://www.usedby.ai/companies/industry/edtech-e-learning.md)
- Website: [duolingo.com](https://duolingo.com)
- Public sources: 26

## AI tools

Each line links to the public page that shows the company with the tool. Every line is a customer, at one of three proof levels: confirmed (a case study, a named quote or a press release), observed (the vendor shows the company on its own pages) or signal (a job post shows the company's employees use the tool, the weakest proof). The first public proof is not an adoption date.

| Tool | Category | Proof | First public proof | Source |
|---|---|---|---|---|
| [Decagon](https://www.usedby.ai/tools/decagon.md) | Customer Service Automation | Confirmed | — | [decagon.ai](https://decagon.ai/case-studies/duolingo), captured 2026-10-07 |
| [ElevenLabs](https://www.usedby.ai/tools/elevenlabs.md) | Voice Generation & Audio | Confirmed | On or before March 2026 | [elevenlabs.io](https://elevenlabs.io/), captured 2026-10-02 |
| [GitHub copilot](https://www.usedby.ai/tools/github-copilot.md) | AI Code Assistants | Confirmed | — | [github.com](https://github.com/customer-stories), captured 2026-10-05 |
| [Glean](https://www.usedby.ai/tools/glean.md) | Knowledge & Internal Search | Confirmed | — | [glean.com](https://www.glean.com/resources/customer-stories/duolingo), captured 2026-10-07 |
| [Textio](https://www.usedby.ai/tools/textio.md) | HR & People Development | Confirmed | — | [textio.com](https://textio.com/resources/case-studies/duolingo), captured 2026-10-08 |
| [Vanta](https://www.usedby.ai/tools/vanta.md) | Compliance Automation | Confirmed | — | [vanta.com](https://www.vanta.com/customers/duolingo), captured 2026-10-07 |
| [Arize AI](https://www.usedby.ai/tools/arize-ai.md) | LLM Ops & Frameworks | Observed | — | [arize.com](https://arize.com/pricing/), captured 2026-10-05 |
| [BrightHire](https://www.usedby.ai/tools/brighthire.md) | Recruiting & Talent Acquisition | Observed | On or before September 2025 | [brighthire.com](https://brighthire.com/), captured 2026-10-07 |
| [Cursor](https://www.usedby.ai/tools/cursor.md) | AI Code Editors | Observed | On or before November 2025 | [cursor.com](https://cursor.com/customers), captured 2026-10-02 |
| [Figma](https://www.usedby.ai/tools/figma.md) | Design & UI/UX | Observed | On or before August 2025 | [figma.com](https://www.figma.com/customers/), captured 2026-10-08 |
| [Notion](https://www.usedby.ai/tools/notion.md) | Project & Workspace Mgmt | Observed | On or before November 2024 | [notion.so](https://www.notion.so/customers) |
| [Pinecone](https://www.usedby.ai/tools/pinecone.md) | Vector Databases | Observed | On or before March 2026 | [pinecone.io](https://www.pinecone.io/customers/), captured 2026-10-08 |
| [Replit](https://www.usedby.ai/tools/replit.md) | AI Code Editors | Observed | — | [replit.com](https://replit.com/), captured 2026-10-07 |

## Published results

Reviewed stories only. A figure is quoted with its label; usedby did not measure it.

- [Vanta](https://www.usedby.ai/case-studies/duolingo-vanta.md): **12 hours per week** Time saved per week by the Lead Security Risk (Vendor case study, captured by usedby 2026-10-07)
- [Glean](https://www.usedby.ai/case-studies/duolingo-glean.md): **\>$1.1M** yearly time savings from improved information (Vendor case study, captured by usedby 2026-10-07)

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Source: https://www.usedby.ai/companies/duolingo · How we check: https://www.usedby.ai/methodology