Gray Swan vs Koi
Gray Swan vs Koi, compared side by side on 20 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 Koi on 45/100.
Where each one leads
Gray Swan
- our overall score: 63/100 against 45/100
Koi
- agent readiness: 51/100 against 39/100
At a glance
| Measure | Gray Swan | Koi |
|---|---|---|
| What it is | Gray Swan provides enterprise-grade security solutions for LLMs, developed by the pioneers of AI vulnerability research, enabling confident AI deployment. | Endpoint security platform for self-provisioned software, securing the software perimeter and agentic endpoints. |
| Category | Cybersecurity, AI Safety, AI Alignment, Large Language Model | Cybersecurity, Endpoint Security, Cloud Security, DevSecOps |
| Sells toBusiness model | B2B | B2B |
| Offering | Software | Platform |
| Founded | 2023 | 2024 |
| Headquarters | Pittsburgh, United States | Tel Aviv, Israel |
| Status | Active | Inactive |
Size, funding and growth
| Measure | Gray Swan | Koi |
|---|---|---|
| Employees | 81 | Not published |
| Total funding | $45.7M | $48.0M |
| Latest round | Series A | Series A |
| 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 | Koi |
|---|---|---|
| StartupHub scoreOur 0-100 rating | 63/100 | 45/100 |
| Traction | 57/100 | 38/100 |
| Team | 70/100 | 60/100 |
| Community | Not published | 8/100 |
| Search visibility | 23/100 | 27/100 |
| Quality | 72/100 | 45/100 |
| Agent readinessHow well an AI agent can read and act on the site | F (39/100) | D (51/100) |
| Domain ratingLink authority, 0-100 | 64/100 | 70/100 |
Technology
Detected on each public site, so it reflects the marketing stack as well as the product.
| Measure | Gray Swan | Koi |
|---|---|---|
| CDN | Cloudflare | Cloudflare |
| CMS | Webflow | Webflow |
| Frameworks | Tailwind CSS | Not detected |
| Analytics | PostHog | Google Analytics 4, Segment |
| Support stack | HubSpot | HubSpot |
What users say
| Measure | Gray Swan | Koi |
|---|---|---|
| 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 Koi: common questions
Which is better, Gray Swan or Koi?
On our 0-100 score Gray Swan rates higher (63/100 against 45/100). 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 20 data points above: read the rows that match what you are buying for.
How do Gray Swan and Koi compare on the numbers?
Gray Swan leads on our overall score (63/100 against 45/100). Koi leads on agent readiness (51/100 against 39/100).
What do real users say about Gray Swan and Koi?
Gray Swan: 5 positive and 0 negative mentions across 5 Reddit threads we track.
Read the full Gray Swan review and pricing or the Koi review and pricing. You can also browse other Gray Swan alternatives we track.