Definely vs OpenAI
Definely vs OpenAI, compared side by side on 19 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: Definely is on 47/100 and OpenAI on 86/100.
Where each one leads
Definely
- agent readiness: 48/100 against 39/100
OpenAI
- our overall score: 86/100 against 47/100
- domain rating: 93/100 against 54/100
- headcount: 10,540 against 112
- funding raised: $191B against $30.0M
- LinkedIn following: 11,490,460 against 11,808
At a glance
| Measure | Definely | OpenAI |
|---|---|---|
| What it is | Structured review tools to help lawyers read, analyse, and proof complex contracts. Reduce the hidden risk in complex contracts. | OpenAI is an AI research and deployment company dedicated to ensuring that artificial general intelligence benefits all of humanity. |
| Category | AI Tools & Apps, AI Coding Assistant, Developer Tools, Documentation Platform | Artificial Intelligence, Large Language Models, Generative AI, Foundation Models |
| Sells toBusiness model | B2B | B2B, B2C |
| Offering | Software | Platform |
| Founded | 2022 | 2015 |
| Headquarters | San Francisco, United States | San Francisco, United States |
| Status | Active | Active |
Size, funding and growth
| Measure | Definely | OpenAI |
|---|---|---|
| Employees | 112 | 10,540 |
| Headcount growthLast 12 months | Not published | +106.7% |
| Total funding | $30.0M | $191B |
| Latest round | Not published | Equity Round |
| Valuation | Not published | $852B |
| LinkedIn followers | 11,808 | 11,490,460 |
StartupHub scores
Our own 0-100 ratings. They measure company strength and site quality, not which product suits you.
| Measure | Definely | OpenAI |
|---|---|---|
| StartupHub scoreOur 0-100 rating | 47/100 | 86/100 |
| Traction | 57/100 | 60/100 |
| Team | 70/100 | 90/100 |
| Community | Not published | 45/100 |
| Search visibility | 33/100 | 71/100 |
| Quality | 40/100 | 98/100 |
| Agent readinessHow well an AI agent can read and act on the site | D (48/100) | F (39/100) |
| Domain ratingLink authority, 0-100 | 54/100 | 93/100 |
Technology
Detected on each public site, so it reflects the marketing stack as well as the product.
| Measure | Definely | OpenAI |
|---|---|---|
| Hosting | Not detected | Vercel |
| CDN | Cloudflare | Cloudflare |
| CMS | Webflow | Not detected |
| Frameworks | Not detected | Next.js, Tailwind CSS |
| Analytics | Google Tag Manager | Not detected |
| Support stack | HubSpot | Not detected |
| Open source | No | Yes |
Product and pricing
| Measure | Definely | OpenAI |
|---|---|---|
| Key features | Not published | Connectors to Company Knowledge, Custom Connectors via MCP, Record Mode, Flexible Pricing with Credits, SSO for ChatGPT Team |
What users say
| Measure | Definely | OpenAI |
|---|---|---|
| Community ratingVisitor votes on StartupHub | Not published | 5.0/5 from 1 vote |
| Reddit sentimentThreads we track | Not published | 2 positive, 4 negative across 6 threads |
“OpenAI is an AI research and deployment company. OpenAI's mission is to create safe and powerful AI that benefits all of humanity. We are an unofficially-run community. OpenAI makes Sora, ChatGPT, and DALL·E 3.”r/
Definely vs OpenAI: common questions
Which is better, Definely or OpenAI?
On our 0-100 score OpenAI rates higher (86/100 against 47/100). 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 19 data points above: read the rows that match what you are buying for.
How do Definely and OpenAI compare on the numbers?
Definely leads on agent readiness (48/100 against 39/100). OpenAI leads on our overall score (86/100 against 47/100), domain rating (93/100 against 54/100), headcount (10,540 against 112), funding raised ($191B against $30.0M), LinkedIn following (11,490,460 against 11,808).
What do real users say about Definely and OpenAI?
OpenAI: 2 positive and 4 negative mentions across 6 Reddit threads we track.
Read the full Definely review and pricing or the OpenAI review and pricing. You can also browse other Definely alternatives we track.