Circle vs Sponge
Circle vs Sponge, compared side by side on 18 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: Circle is on 55/100 and Sponge on 42/100.
Where each one leads
Circle
- our overall score: 55/100 against 42/100
- domain rating: 83/100 against 44/100
- headcount: 1,500 against 3
- funding raised: $2.8B against $500K
Sponge
Leads on none of the measures we hold for both companies.
At a glance
| Measure | Circle | Sponge |
|---|---|---|
| What it is | Circle provides a full-stack platform for the internet financial system, offering stablecoins like USDC and EURC, tokenized funds, and services for minting, FX, and payments. | Financial infrastructure for AI agents to hold and spend money autonomously. |
| Category | Fintech, Payments, Digital Payments, Web3 | Fintech, Payments, Digital Payments, Embedded Finance |
| Sells toBusiness model | B2B | B2B |
| Offering | Platform | Platform |
| Founded | Not published | 2026 |
| Headquarters | Boston, United States | San Francisco, United States |
| Status | Active | Active |
Size, funding and growth
| Measure | Circle | Sponge |
|---|---|---|
| Employees | 1,500 | 3 |
| Headcount growthLast 12 months | +33.7% | Not published |
| Total funding | $2.8B | $500K |
| Latest round | Not published | Early Stage VC |
| LinkedIn followers | 221,487 | Not published |
StartupHub scores
Our own 0-100 ratings. They measure company strength and site quality, not which product suits you.
| Measure | Circle | Sponge |
|---|---|---|
| StartupHub scoreOur 0-100 rating | 55/100 | 42/100 |
| Traction | 60/100 | 35/100 |
| Team | 10/100 | 70/100 |
| Community | Not published | 15/100 |
| Search visibility | 39/100 | 16/100 |
| Quality | 65/100 | 40/100 |
| Agent readinessHow well an AI agent can read and act on the site | D (51/100) | D (51/100) |
| Domain ratingLink authority, 0-100 | 83/100 | 44/100 |
Technology
Detected on each public site, so it reflects the marketing stack as well as the product.
| Measure | Circle | Sponge |
|---|---|---|
| Hosting | Not detected | Vercel |
| CDN | Cloudflare | Cloudflare |
| CMS | Webflow | Not detected |
| Frameworks | Tailwind CSS, Bootstrap | Next.js, Tailwind CSS, Bootstrap |
| Agentic commerceMachine-readable checkout or agent payment rails | Crypto Payments | X402, MPP |
Circle vs Sponge: common questions
Which is better, Circle or Sponge?
On our 0-100 score Circle rates higher (55/100 against 42/100). 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 18 data points above: read the rows that match what you are buying for.
How do Circle and Sponge compare on the numbers?
Circle leads on our overall score (55/100 against 42/100), domain rating (83/100 against 44/100), headcount (1,500 against 3), funding raised ($2.8B against $500K).
Read the full Circle review and pricing or the Sponge review and pricing. You can also browse other Circle alternatives we track.