Castelion vs Scout AI
Which Defense AI AI tool is better in 2026?
Castelion
Mass-producing affordable hypersonic weapons for defense
Scout AI
Foundation model and autonomy layer for unmanned military systems
Side-by-side
Castelion is the more established option (raised $1.2B); pricing is comparable on both sides.
| Metric | Castelion | Scout AI |
|---|---|---|
| Taglinei | Mass-producing affordable hypersonic weapons for defense | Foundation model and autonomy layer for unmanned military systems |
| Foundedi | 2022🏆 | 2024 |
| HQi | El Segundo, US | Sunnyvale, United States |
| Employeesi | 201-500 | 11-50🏆 |
| Neuron scorei | 71🏆 | 57 |
| Total fundingi | $1.2B🏆 | $100M |
| Latest roundi | series-c · Aug 2026 | Series A · Apr 2026 |
| 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 Castelion and Scout AI.
| Capability | Castelion | Scout AI |
|---|---|---|
| MCP support | ✗ | ✗ |
| Public API | ✗ | ✗ |
| Webhooks | ✗ | ✗ |
| OAuth 2.0 | ✗ | ✗ |
| SDK languages | — | — |
| Free plan | ✗ | ✗ |
| Free trial | ✗ | ✗ |
| Verified | ✗ | ✗ |
| Active deal | ✗ | ✗ |
🟢 Strengths of Castelion
- Has raised more capital ($1.2B vs $100M)
- Higher Neuron score (71 vs 57)
- More mature (2022)
🔵 Strengths of Scout AI
- Newer company (2024)
Which should you choose?
Choose Scout AI if price matters most — it starts at Enterprise · Contact sales, which is friendlier for teams watching burn. Both Defense AI tools ship core features, so the cost delta often decides it for small teams and solo operators.
Choose Castelion if you want the most established option — it has raised $1.2B, 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
Castelion vs Scout AI — which is better?
It depends on your priority. Castelion has raised more capital and is the more established option; Scout AI has broader feature depth. See the side-by-side table above.
Is Castelion cheaper than Scout AI?
No — Scout AI's cheapest paid plan is Enterprise · Contact sales, while Castelion's is Enterprise · Contact sales.
Do Castelion and Scout AI offer free plans?
Castelion: Paid only. Scout AI: Paid only.
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