Doppel vs Horizon3.ai
Which for Cyber Defense AI tool is better in 2026?
Doppel
AI-native platform for social engineering defense that protects brands and individuals from
Horizon3.ai
Autonomous penetration testing with NodeZero, run continuously at production scale
Side-by-side
Horizon3.ai is the more established option (raised $178.5M); pricing is comparable on both sides.
| Metric | Doppel | Horizon3.ai |
|---|---|---|
| Taglinei | AI-native platform for social engineering defense that protects brands and individuals from | Autonomous penetration testing with NodeZero, run continuously at production scale |
| Foundedi | 2022 | 2019🏆 |
| HQi | — | San Francisco, United States |
| Employeesi | 11-50 | 201-500🏆 |
| Neuron scorei | 51 | 72🏆 |
| Total fundingi | $105M | $178.5M🏆 |
| Latest roundi | Series C | 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 | Free | Enterprise · Contact sales |
| Categoriesi |
Capability matrix
Developer-facing capabilities and access signals for Doppel and Horizon3.ai.
| Capability | Doppel | Horizon3.ai |
|---|---|---|
| MCP support | ✗ | ✗ |
| Public API | ✗ | ✓ |
| Webhooks | ✗ | ✗ |
| OAuth 2.0 | ✗ | ✗ |
| SDK languages | — | — |
| Free plan | ✓ | ✗ |
| Free trial | ✓ | ✓ |
| Verified | ✗ | ✗ |
| Active deal | ✗ | ✗ |
🟢 Strengths of Doppel
- Offers a free plan
- Newer company (2022)
🔵 Strengths of Horizon3.ai
- Has raised more capital ($178.5M vs $105M)
- Higher Neuron score (72 vs 51)
- 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 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
Doppel vs Horizon3.ai — which is better?
It depends on your priority. Doppel is the leaner option; Horizon3.ai has broader feature depth. See the side-by-side table above.
Is Doppel cheaper than Horizon3.ai?
No — Horizon3.ai's cheapest paid plan is Enterprise · Contact sales, while Doppel's is Free.
Do Doppel and Horizon3.ai offer free plans?
Doppel: Yes, has a free plan. Horizon3.ai: Free trial only.
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