Castelion vs Distributed Spectrum
Which Defense AI AI tool is better in 2026?
Castelion
Mass-producing affordable hypersonic weapons for defense
Distributed Spectrum
Real-time radio-frequency sensing and signals intelligence
Side-by-side
Castelion is the more established option (raised $469M); pricing is comparable on both sides.
| Metric | Castelion | Distributed Spectrum |
|---|---|---|
| Taglinei | Mass-producing affordable hypersonic weapons for defense | Real-time radio-frequency sensing and signals intelligence |
| Foundedi | 2022 | 2020🏆 |
| HQi | El Segundo, US | — |
| Employeesi | 201-500🏆 | 11-50 |
| Neuron scorei | 76🏆 | 64 |
| Total fundingi | $469M🏆 | $30M |
| Latest roundi | Series B · Dec 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 Castelion and Distributed Spectrum.
| Capability | Castelion | Distributed Spectrum |
|---|---|---|
| MCP support | ✗ | ✗ |
| Public API | ✗ | ✗ |
| Webhooks | ✗ | ✗ |
| OAuth 2.0 | ✗ | ✗ |
| SDK languages | — | — |
| Free plan | ✗ | ✓ |
| Free trial | ✗ | ✓ |
| Verified | ✗ | ✗ |
| Active deal | ✗ | ✗ |
🟢 Strengths of Castelion
- Has raised more capital ($469M vs $30M)
- Higher Neuron score (76 vs 64)
- Newer company (2022)
🔵 Strengths of Distributed Spectrum
- Offers a free plan
- Offers a free trial
- More mature (2020)
Which should you choose?
Choose Distributed Spectrum if price matters most — it starts at Free, 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 $469M, 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 Distributed Spectrum — which is better?
It depends on your priority. Castelion has raised more capital and is the more established option; Distributed Spectrum has broader feature depth. See the side-by-side table above.
Is Castelion cheaper than Distributed Spectrum?
No — Distributed Spectrum's cheapest paid plan is Free, while Castelion's is Enterprise · Contact sales.
Do Castelion and Distributed Spectrum offer free plans?
Castelion: Paid only. Distributed Spectrum: Yes, has a free plan.
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