Mayfield vs PromptX
Mayfield vs PromptX, compared side by side on 13 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: Mayfield is on 62/100 and PromptX on 11/100.
Where each one leads
Mayfield
- our overall score: 62/100 against 11/100
- domain rating: 64/100 against 42/100
PromptX
- agent readiness: 53/100 against 45/100
At a glance
| Measure | Mayfield | PromptX |
|---|---|---|
| What it is | Early-stage venture capital firm investing in AI-driven startups, emphasizing inception-stage funding and long-term partnerships. | AI Knowledge Navigator That Knows Your Enterprise |
| Category | Venture Capital, Artificial Intelligence, Early-Stage Investment, AI Infrastructure | B2B (Enterprise), AI, Agentic AI, Enterprise AI |
| Sells toBusiness model | B2B | B2B |
| Offering | Services | Software |
| Founded | 1969 | 2024 |
| Headquarters | Menlo Park, United States | London, England, United Kingdom, Europe |
| Status | Active | Active |
Size, funding and growth
| Measure | Mayfield | PromptX |
|---|---|---|
| Employees | 85 | Not published |
| Total funding | $580M | Not published |
| Latest round | Fund | Not published |
| LinkedIn followers | 29,930 | Not published |
StartupHub scores
Our own 0-100 ratings. They measure company strength and site quality, not which product suits you.
| Measure | Mayfield | PromptX |
|---|---|---|
| StartupHub scoreOur 0-100 rating | 62/100 | 11/100 |
| Traction | 59/100 | Not published |
| Team | 30/100 | Not published |
| Community | Not published | 8/100 |
| Search visibility | 20/100 | 15/100 |
| Quality | 78/100 | Not published |
| Agent readinessHow well an AI agent can read and act on the site | D (45/100) | D (53/100) |
| Domain ratingLink authority, 0-100 | 64/100 | 42/100 |
Technology
Detected on each public site, so it reflects the marketing stack as well as the product.
| Measure | Mayfield | PromptX |
|---|---|---|
| CDN | Cloudflare | Cloudflare |
| CMS | WordPress | Not detected |
| Frameworks | Jquery | Tailwind CSS |
| Analytics | Google Tag Manager, Fathom | Not detected |
Mayfield vs PromptX: common questions
Which is better, Mayfield or PromptX?
On our 0-100 score Mayfield rates higher (62/100 against 11/100). 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 13 data points above: read the rows that match what you are buying for.
How do Mayfield and PromptX compare on the numbers?
Mayfield leads on our overall score (62/100 against 11/100), domain rating (64/100 against 42/100). PromptX leads on agent readiness (53/100 against 45/100).
Read the full Mayfield review and pricing or the PromptX review and pricing. You can also browse other Mayfield alternatives we track.