645 Ventures vs Atlas Ventures
645 Ventures vs Atlas Ventures, 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: 645 Ventures is on 43/100 and Atlas Ventures on 34/100.
Where each one leads
645 Ventures
- our overall score: 43/100 against 34/100
- agent readiness: 32/100 against 21/100
- domain rating: 48/100 against 2/100
- headcount: 10 against 8
Atlas Ventures
Leads on none of the measures we hold for both companies.
At a glance
| Measure | 645 Ventures | Atlas Ventures |
|---|---|---|
| What it is | Venture capital firm focused on early-stage technology companies. | Venture capital firm investing in early-stage technology companies. |
| Category | Venture Capital, Technology, Artificial Intelligence, Software | Venture Capital, Technology, Software, Robotics |
| Sells toBusiness model | B2B | B2B |
| Offering | Platform | Services |
| Founded | 2015 | 2009 |
| Headquarters | New York, USA | Boston, USA |
| Status | Active | Inactive |
Size, funding and growth
| Measure | 645 Ventures | Atlas Ventures |
|---|---|---|
| Employees | 10 | 8 |
| Total funding | $63.0M | $63.0M |
| Latest round | Venture Round | Strategic |
| Valuation | $1.1B | $1.1B |
StartupHub scores
Our own 0-100 ratings. They measure company strength and site quality, not which product suits you.
| Measure | 645 Ventures | Atlas Ventures |
|---|---|---|
| StartupHub scoreOur 0-100 rating | 43/100 | 34/100 |
| Traction | 49/100 | 49/100 |
| Search visibility | 11/100 | 7/100 |
| Quality | 55/100 | 45/100 |
| Agent readinessHow well an AI agent can read and act on the site | F (32/100) | F (21/100) |
| Domain ratingLink authority, 0-100 | 48/100 | 2/100 |
Technology
Detected on each public site, so it reflects the marketing stack as well as the product.
| Measure | 645 Ventures | Atlas Ventures |
|---|---|---|
| Hosting | Vercel | Not detected |
| CDN | Vercel | Not detected |
| Frameworks | Next.js | Not detected |
| Analytics | Google Analytics 4 | Not detected |
| Open source | Yes | No |
645 Ventures vs Atlas Ventures: common questions
Which is better, 645 Ventures or Atlas Ventures?
On our 0-100 score 645 Ventures rates higher (43/100 against 34/100). 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 645 Ventures and Atlas Ventures compare on the numbers?
645 Ventures leads on our overall score (43/100 against 34/100), agent readiness (32/100 against 21/100), domain rating (48/100 against 2/100), headcount (10 against 8).
Read the full 645 Ventures review and pricing or the Atlas Ventures review and pricing. You can also browse other 645 Ventures alternatives we track.