Horizon3.ai vs Seezo
Which for Cyber Defense AI tool is better in 2026?
Horizon3.ai
Autonomous penetration testing with NodeZero, run continuously at production scale
Seezo
Bengaluru-based cybersecurity startup offering GenAI-powered automated security design reviews
Side-by-side
Horizon3.ai is the more established option (raised $178.5M); pricing is comparable on both sides.
| Metric | Horizon3.ai | Seezo |
|---|---|---|
| Taglinei | Autonomous penetration testing with NodeZero, run continuously at production scale | Bengaluru-based cybersecurity startup offering GenAI-powered automated security design reviews |
| Foundedi | 2019🏆 | 2023 |
| HQi | San Francisco, United States | — |
| Employeesi | 201-500🏆 | 11-50 |
| Neuron scorei | 72🏆 | 49 |
| Total fundingi | $178.5M🏆 | $7M |
| Latest roundi | Series D · Jun 2025 | Series A |
| Valuationi | — | — |
| Cheapest paid plani | Pricing not disclosed | Pricing not disclosed |
| Free plani | ✗ | ✓ |
| Free triali | ✓ | ✓ |
| Top tier pricei | Pricing not disclosed | Pricing not disclosed |
| Pricing summaryi | Enterprise · Contact sales | Free |
| Categoriesi |
Capability matrix
Developer-facing capabilities and access signals for Horizon3.ai and Seezo.
| Capability | Horizon3.ai | Seezo |
|---|---|---|
| MCP support | ✗ | ✗ |
| Public API | ✓ | ✗ |
| Webhooks | ✗ | ✗ |
| OAuth 2.0 | ✗ | ✗ |
| SDK languages | — | — |
| Free plan | ✗ | ✓ |
| Free trial | ✓ | ✓ |
| Verified | ✗ | ✗ |
| Active deal | ✗ | ✗ |
🟢 Strengths of Horizon3.ai
- Has raised more capital ($178.5M vs $7M)
- Higher Neuron score (72 vs 49)
- More mature (2019)
🔵 Strengths of Seezo
- Offers a free plan
- Newer company (2023)
Which should you choose?
Choose Seezo if price matters most — it starts at Free, which is friendlier for teams watching burn. Both AI for Cyber Defense tools ship core features, so the cost delta often decides it for small teams and solo operators.
Choose Horizon3.ai if you want the most established option — it has raised $178.5M, suggesting more runway for enterprise features, support, and long-term roadmap. For mission-critical workflows or larger teams, that stability often outweighs a lower monthly price.
Frequently asked questions
Horizon3.ai vs Seezo — which is better?
It depends on your priority. Horizon3.ai has raised more capital and is the more established option; Seezo has broader feature depth. See the side-by-side table above.
Is Horizon3.ai cheaper than Seezo?
No — Seezo's cheapest paid plan is Free, while Horizon3.ai's is Enterprise · Contact sales.
Do Horizon3.ai and Seezo offer free plans?
Horizon3.ai: Free trial only. Seezo: Yes, has a free plan.
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