# What AI does Grammarly use?

Grammarly uses 9 AI tools on usedby: 5 confirmed, 4 observed and 0 signals. Tools: Common Room, Forethought, Gem, Glean, Hightouch, Cursor, Harvey and Hugging Face and 1 other. Latest check 2026-10-08: 9 of 9 public lines checked.

- Industry: [Artificial Intelligence](https://www.usedby.ai/companies/industry/artificial-intelligence.md)
- Website: [grammarly.com](https://grammarly.com)
- Public sources: 18

## 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 |
|---|---|---|---|---|
| [Common Room](https://www.usedby.ai/tools/common-room.md) | Sales Prospecting & Enrichment | Confirmed | On or before March 2025 | [commonroom.io](https://www.commonroom.io/customers/grammarly-customer-story-video/), captured 2026-10-07 |
| [Forethought](https://www.usedby.ai/tools/forethought.md) | Customer Service Automation | Confirmed | — | [forethought.ai](https://forethought.ai/customers), captured 2026-10-05 |
| [Gem](https://www.usedby.ai/tools/gem.md) | Recruiting & Talent Acquisition | Confirmed | — | [gem.com](https://www.gem.com/case-study/grammarly), captured 2026-10-06 |
| [Glean](https://www.usedby.ai/tools/glean.md) | Knowledge & Internal Search | Confirmed | — | [glean.com](https://www.glean.com/resources/customer-stories/grammarly), captured 2026-10-07 |
| [Hightouch](https://www.usedby.ai/tools/hightouch.md) | Data Cloud & Analytics | Confirmed | — | [hightouch.com](https://hightouch.com/customers/grammarly), 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 |
| [Harvey](https://www.usedby.ai/tools/harvey.md) | Legal AI | Observed | On or before August 2025 | [harvey.ai](https://www.harvey.ai/customers), captured 2026-10-08 |
| [Hugging Face](https://www.usedby.ai/tools/hugging-face.md) | ML Ops & Training | Observed | — | [huggingface.co](https://huggingface.co/), captured 2026-10-03 |
| [Zapier](https://www.usedby.ai/tools/zapier.md) | Automation & Integration | Observed | On or before October 2024 | [zapier.com](https://zapier.com/customer-stories/mercari), captured 2026-10-04 |

## Published results

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

- [Hightouch](https://www.usedby.ai/case-studies/grammarly-hightouch.md): **4 weeks to 3 days** Time to launch and execute a batch-and-blast (Vendor case study, captured by usedby 2026-10-07)
- [Glean](https://www.usedby.ai/case-studies/grammarly-glean.md): story without a checked figure. (Vendor case study, captured by usedby 2026-10-07)

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