Castelion vs Gecko Robotics
Which Defense AI AI tool is better in 2026?
Castelion
Mass-producing affordable hypersonic weapons for defense
Gecko Robotics
AI and robotics for inspecting critical infrastructure
Side-by-side
Castelion is the more established option (raised $1.2B); pricing is comparable on both sides.
| Metric | Castelion | Gecko Robotics |
|---|---|---|
| Taglinei | Mass-producing affordable hypersonic weapons for defense | AI and robotics for inspecting critical infrastructure |
| Foundedi | 2022 | 2013🏆 |
| HQi | El Segundo, US | Pittsburgh, United States |
| Employeesi | 201-500🏆 | — |
| Neuron scorei | 72🏆 | 45 |
| Total fundingi | $1.2B🏆 | $354M |
| Latest roundi | series-c · Aug 2026 | Series D · Jun 2025 |
| Valuationi | — | $1.3B🏆 |
| 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 | Custom |
| Categoriesi |
Capability matrix
Developer-facing capabilities and access signals for Castelion and Gecko Robotics.
| Capability | Castelion | Gecko Robotics |
|---|---|---|
| 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 $354M)
- Higher Neuron score (72 vs 45)
- Newer company (2022)
🔵 Strengths of Gecko Robotics
- More mature (2013)
Which should you choose?
Choose Gecko Robotics if price matters most — it starts at Custom, 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 Gecko Robotics — which is better?
It depends on your priority. Castelion has raised more capital and is the more established option; Gecko Robotics has broader feature depth. See the side-by-side table above.
Is Castelion cheaper than Gecko Robotics?
No — Gecko Robotics's cheapest paid plan is Custom, while Castelion's is Enterprise · Contact sales.
Do Castelion and Gecko Robotics offer free plans?
Castelion: Paid only. Gecko Robotics: Paid only.
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