Gray Swan vs Guardrails AI
Gray Swan vs Guardrails AI, 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: Gray Swan is on 63/100 and Guardrails AI on 42/100.
Where each one leads
Gray Swan
- our overall score: 63/100 against 42/100
- agent readiness: 39/100 against 28/100
- domain rating: 64/100 against 27/100
- funding raised: $45.7M against $12.0M
Guardrails AI
Leads on none of the measures we hold for both companies.
At a glance
| Measure | Gray Swan | Guardrails AI |
|---|---|---|
| What it is | Gray Swan provides enterprise-grade security solutions for LLMs, developed by the pioneers of AI vulnerability research, enabling confident AI deployment. | Ensures AI applications are reliable, safe, and performant through automated testing and validation. |
| Category | Cybersecurity, AI Safety, AI Alignment, Large Language Model | AI Safety, AI Alignment, AI Testing, AI Governance |
| Sells toBusiness model | B2B | B2B |
| Offering | Software | Platform |
| Founded | 2023 | 2023 |
| Headquarters | Pittsburgh, United States | New York, United States |
| Status | Active | Active |
Size, funding and growth
| Measure | Gray Swan | Guardrails AI |
|---|---|---|
| Employees | 81 | Not published |
| Total funding | $45.7M | $12.0M |
| Latest round | Series A | Seed |
| Valuation | $200M | Not published |
| LinkedIn followers | 7,116 | Not published |
StartupHub scores
Our own 0-100 ratings. They measure company strength and site quality, not which product suits you.
| Measure | Gray Swan | Guardrails AI |
|---|---|---|
| StartupHub scoreOur 0-100 rating | 63/100 | 42/100 |
| Traction | 57/100 | 35/100 |
| Team | 70/100 | Not published |
| Community | Not published | 8/100 |
| Search visibility | 23/100 | 15/100 |
| Quality | 72/100 | 58/100 |
| Agent readinessHow well an AI agent can read and act on the site | F (39/100) | F (28/100) |
| Domain ratingLink authority, 0-100 | 64/100 | 27/100 |
Technology
Detected on each public site, so it reflects the marketing stack as well as the product.
| Measure | Gray Swan | Guardrails AI |
|---|---|---|
| Hosting | Not detected | Netlify |
| CDN | Cloudflare | Netlify |
| CMS | Webflow | Not detected |
| Frameworks | Tailwind CSS | Tailwind CSS |
| Analytics | PostHog | Google Analytics 4, Segment |
| Support stack | HubSpot | Not detected |
What users say
| Measure | Gray Swan | Guardrails AI |
|---|---|---|
| Reddit sentimentThreads we track | 5 positive, 0 negative across 5 threads | Not published |
“Gray Swan AI—where AI security meets the underground. This is the proving ground for red teamers, hackers, & AI skeptics pushing models to their limits. Jailbreak, exploit, & expose vulnerabilities in cutting-edge AI systems.”r/
Gray Swan vs Guardrails AI: common questions
Which is better, Gray Swan or Guardrails AI?
On our 0-100 score Gray Swan rates higher (63/100 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 Gray Swan and Guardrails AI compare on the numbers?
Gray Swan leads on our overall score (63/100 against 42/100), agent readiness (39/100 against 28/100), domain rating (64/100 against 27/100), funding raised ($45.7M against $12.0M).
What do real users say about Gray Swan and Guardrails AI?
Gray Swan: 5 positive and 0 negative mentions across 5 Reddit threads we track.
Read the full Gray Swan review and pricing or the Guardrails AI review and pricing. You can also browse other Gray Swan alternatives we track.

