Armadin vs Horizon3.ai
Which Testing & QA AI tool is better in 2026?
Armadin
Autonomous AI red-teaming for the era of AI hyperattacks
Horizon3.ai
Autonomous penetration testing with NodeZero, run continuously at production scale
Side-by-side
Armadin is the more established option (raised $189.9M); pricing is comparable on both sides.
| Metric | Armadin | Horizon3.ai |
|---|---|---|
| Taglinei | Autonomous AI red-teaming for the era of AI hyperattacks | Autonomous penetration testing with NodeZero, run continuously at production scale |
| Foundedi | 2025 | 2019🏆 |
| HQi | Washington, US | San Francisco, United States |
| Employeesi | 51-200🏆 | 201-500 |
| Neuron scorei | 65 | 72🏆 |
| Total fundingi | $189.9M🏆 | $178.5M |
| Latest roundi | Series A · Mar 2026 | Series D · Jun 2025 |
| 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 | Enterprise · Contact sales |
| Categoriesi |
Capability matrix
Developer-facing capabilities and access signals for Armadin and Horizon3.ai.
| Capability | Armadin | Horizon3.ai |
|---|---|---|
| MCP support | ✗ | ✗ |
| Public API | ✗ | ✓ |
| Webhooks | ✗ | ✗ |
| OAuth 2.0 | ✗ | ✗ |
| SDK languages | — | — |
| Free plan | ✗ | ✗ |
| Free trial | ✗ | ✓ |
| Verified | ✗ | ✗ |
| Active deal | ✗ | ✗ |
🟢 Strengths of Armadin
- Has raised more capital ($189.9M vs $178.5M)
- Newer company (2025)
🔵 Strengths of Horizon3.ai
- Higher Neuron score (72 vs 65)
- Offers a free trial
- More mature (2019)
Which should you choose?
Choose Horizon3.ai if price matters most — it starts at Enterprise · Contact sales, which is friendlier for teams watching burn. Both AI Testing & QA tools ship core features, so the cost delta often decides it for small teams and solo operators.
Choose Armadin if you want the most established option — it has raised $189.9M, 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
Armadin vs Horizon3.ai — which is better?
It depends on your priority. Armadin has raised more capital and is the more established option; Horizon3.ai has broader feature depth. See the side-by-side table above.
Is Armadin cheaper than Horizon3.ai?
No — Horizon3.ai's cheapest paid plan is Enterprise · Contact sales, while Armadin's is Enterprise · Contact sales.
Do Armadin and Horizon3.ai offer free plans?
Armadin: Paid only. Horizon3.ai: Free trial only.
Explore more AI Testing & QA tools
Contextual paths to related AI startups, deals and rankings.