Polygon vs Sei
Polygon vs Sei, compared side by side on 20 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: Polygon is on 81/100 and Sei on 62/100.
Where each one leads
Polygon
- our overall score: 81/100 against 62/100
- domain rating: 82/100 against 72/100
- headcount: 389 against 15
- funding raised: $400M against $35.0M
- LinkedIn following: 209,060 against 1,511
Sei
Leads on none of the measures we hold for both companies.
At a glance
| Measure | Polygon | Sei |
|---|---|---|
| What it is | A framework and platform for building and connecting blockchain networks, focusing on scalability and usability for Ethereum. | High-performance blockchain for decentralized exchanges. |
| Category | Blockchain, Web3, DeFi, Scalability | Blockchain, Fintech, Web3, Crypto Exchange |
| Sells toBusiness model | B2B | B2B |
| Offering | Platform | Platform |
| Founded | 2017 | 2021 |
| Headquarters | Mumbai, India | San Francisco, United States |
| Status | Active | Active |
Size, funding and growth
| Measure | Polygon | Sei |
|---|---|---|
| Employees | 389 | 15 |
| Open roles | Not published | 3 |
| Total funding | $400M | $35.0M |
| Latest round | Series B | Strategic |
| Valuation | $10B | $800M |
| LinkedIn followers | 209,060 | 1,511 |
StartupHub scores
Our own 0-100 ratings. They measure company strength and site quality, not which product suits you.
| Measure | Polygon | Sei |
|---|---|---|
| StartupHub scoreOur 0-100 rating | 81/100 | 62/100 |
| Search visibility | 5/100 | 2/100 |
| Agent readinessHow well an AI agent can read and act on the site | D (43/100) | D (42/100) |
| Domain ratingLink authority, 0-100 | 82/100 | 72/100 |
Technology
Detected on each public site, so it reflects the marketing stack as well as the product.
| Measure | Polygon | Sei |
|---|---|---|
| Hosting | Not detected | Vercel |
| CDN | Cloudflare | Vercel |
| Frameworks | Not detected | Next.js, Tailwind CSS |
| Analytics | Google Tag Manager | Google Tag Manager |
| Support stack | HubSpot | Zendesk, Discourse |
| Open source | Yes | Yes |
Polygon vs Sei: common questions
Which is better, Polygon or Sei?
On our 0-100 score Polygon rates higher (81/100 against 62/100). 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 20 data points above: read the rows that match what you are buying for.
How do Polygon and Sei compare on the numbers?
Polygon leads on our overall score (81/100 against 62/100), domain rating (82/100 against 72/100), headcount (389 against 15), funding raised ($400M against $35.0M), LinkedIn following (209,060 against 1,511).
Read the full Polygon review and pricing or the Sei review and pricing. You can also browse other Polygon alternatives we track.