Cajal vs OpenAI
Cajal vs OpenAI, compared side by side on 22 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: Cajal is on 55/100 and OpenAI on 82/100.
Where each one leads
Cajal
Leads on none of the measures we hold for both companies.
OpenAI
- our overall score: 82/100 against 55/100
- agent readiness: 39/100 against 22/100
- domain rating: 93/100 against 9/100
- headcount: 10,452 against 3
- funding raised: $21B against $4.5M
- LinkedIn following: 11,484,918 against 559
At a glance
| Measure | Cajal | OpenAI |
|---|---|---|
| What it is | Scaling formal verification to accelerate scientific discovery | Artificial intelligence research and deployment company focused on developing advanced AI models like GPT-5.6 and GPT-Live, offering products such as ChatGPT and an API platform. |
| Category | B2B, Big Data, Foundation Model, Formal Verification | Frontier AI Lab, AGI Research, Foundation Model, Large Language Model |
| Sells toBusiness model | B2B | B2B, B2C |
| Offering | Software | Platform |
| Founded | 2025 | 2015 |
| Headquarters | San Francisco, United States | San Francisco, United States |
| Status | Active | Active |
Size, funding and growth
| Measure | Cajal | OpenAI |
|---|---|---|
| Employees | 3 | 10,452 |
| Headcount growthLast 12 months | Not published | +43.6% |
| Total funding | $4.5M | $21B |
| Latest round | Seed | Share Sale |
| Valuation | Not published | $500B |
| LinkedIn followers | 559 | 11,484,918 |
StartupHub scores
Our own 0-100 ratings. They measure company strength and site quality, not which product suits you.
| Measure | Cajal | OpenAI |
|---|---|---|
| StartupHub scoreOur 0-100 rating | 55/100 | 82/100 |
| Traction | 39/100 | 60/100 |
| Team | 60/100 | 70/100 |
| Community | 3/100 | Not published |
| Search visibility | 40/100 | 65/100 |
| Quality | 50/100 | 98/100 |
| Agent readinessHow well an AI agent can read and act on the site | F (22/100) | F (39/100) |
| Domain ratingLink authority, 0-100 | 9/100 | 93/100 |
Technology
Detected on each public site, so it reflects the marketing stack as well as the product.
| Measure | Cajal | OpenAI |
|---|---|---|
| Hosting | Vercel | Vercel |
| CDN | Vercel | Cloudflare |
| Frameworks | Next.js, Tailwind CSS | Next.js, Tailwind CSS |
| Payments | Not detected | Stripe |
| Analytics | Not detected | Singular |
| Support stack | Not detected | Discourse, Gradual |
| Open source | Yes | No |
What users say
| Measure | Cajal | OpenAI |
|---|---|---|
| Community ratingVisitor votes on StartupHub | 1.0/5 from 1 vote | Not published |
Cajal vs OpenAI: common questions
Which is better, Cajal or OpenAI?
On our 0-100 score OpenAI rates higher (82/100 against 55/100). 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 22 data points above: read the rows that match what you are buying for.
How do Cajal and OpenAI compare on the numbers?
OpenAI leads on our overall score (82/100 against 55/100), agent readiness (39/100 against 22/100), domain rating (93/100 against 9/100), headcount (10,452 against 3), funding raised ($21B against $4.5M), LinkedIn following (11,484,918 against 559).
Read the full Cajal review and pricing or the OpenAI review and pricing. You can also browse other Cajal alternatives we track.