Grammarly Business vs Lightkey Sources
Grammarly Business vs Lightkey Sources, compared side by side on 14 data points: what each one does, how big it is, what it has raised, the tech running each site, and what users report. We score both out of 100 on traction, team and visibility: Grammarly Business is on 59/100 and Lightkey Sources on 18/100.
Where each one leads
Grammarly Business
- our overall score: 59/100 against 18/100
- domain rating: 90/100 against 57/100
- headcount: 958 against 2
- LinkedIn following: 258,506 against 792
Lightkey Sources
- agent readiness: 50/100 against 41/100
At a glance
| Measure | Grammarly Business | Lightkey Sources |
|---|---|---|
| What it is | AI-powered writing assistant that helps millions communicate more effectively. | Intelligent typing experience that seamlessly blends into content creation processes. |
| Category | AI Writing Assistant, Generative AI, Natural Language Processing, Productivity Software | Text, Speech, Predictive Typing, AI Typing Assistant |
| Sells toBusiness model | B2B | B2B, B2C |
| Offering | Software | Software |
| Founded | 2009 | 2016 |
| Headquarters | San Francisco, United States | Tel Aviv, Israel |
| Status | Active | Active |
Size, funding and growth
| Measure | Grammarly Business | Lightkey Sources |
|---|---|---|
| Employees | 958 | 2 |
| Total funding | $3.0B | Not published |
| Latest round | Not published | Bootstrapped |
| Valuation | $1.3B | Not published |
| LinkedIn followers | 258,506 | 792 |
StartupHub scores
Our own 0-100 ratings. They measure company strength and site quality, not which product suits you.
| Measure | Grammarly Business | Lightkey Sources |
|---|---|---|
| StartupHub scoreOur 0-100 rating | 59/100 | 18/100 |
| Traction | 60/100 | 5/100 |
| Search visibility | 22/100 | 33/100 |
| Quality | 78/100 | Not published |
| Agent readinessHow well an AI agent can read and act on the site | D (41/100) | D (50/100) |
| Domain ratingLink authority, 0-100 | 90/100 | 57/100 |
Technology
Detected on each public site, so it reflects the marketing stack as well as the product.
| Measure | Grammarly Business | Lightkey Sources |
|---|---|---|
| Hosting | AWS | Not detected |
| CDN | CloudFront | Not detected |
| CMS | Not detected | Wix |
| Frameworks | Next.js | Not detected |
| Analytics | Not detected | Hotjar |
Grammarly Business vs Lightkey Sources: common questions
Which is better, Grammarly Business or Lightkey Sources?
On our 0-100 score Grammarly Business rates higher (59/100 against 18/100). The score weights traction, team, visibility and profile completeness, so it reflects company strength rather than which product suits you. We compare the two on 14 data points above: read the rows that match what you are buying for.
How do Grammarly Business and Lightkey Sources compare on the numbers?
Grammarly Business leads on our overall score (59/100 against 18/100), domain rating (90/100 against 57/100), headcount (958 against 2), LinkedIn following (258,506 against 792). Lightkey Sources leads on agent readiness (50/100 against 41/100).
Read the full Grammarly Business review and pricing or the Lightkey Sources review and pricing. You can also browse other Grammarly Business alternatives we track.

