Castelion vs Path Robotics
Which Defense AI AI tool is better in 2026?
Castelion
Mass-producing affordable hypersonic weapons for defense
Path Robotics
Physical AI for manufacturing, enabling real-time adaptation for high-quality welds across part variations.
Side-by-side
Castelion is the more established option (raised $1.2B); pricing is comparable on both sides.
| Metric | Castelion | Path Robotics |
|---|---|---|
| Taglinei | Mass-producing affordable hypersonic weapons for defense | Physical AI for manufacturing, enabling real-time adaptation for high-quality welds across part variations. |
| Foundedi | 2022🏆 | — |
| HQi | El Segundo, US | US |
| Employeesi | 201-500🏆 | — |
| Neuron scorei | 71🏆 | 16 |
| Total fundingi | $1.2B🏆 | Undisclosed |
| Latest roundi | series-c · Aug 2026 | — |
| Valuationi | — | — |
| Cheapest paid plani | Pricing not disclosed | — |
| Free plani | ✗ | ✗ |
| Free triali | ✗ | ✗ |
| Top tier pricei | Pricing not disclosed | Enterprise Solution · Contact sales |
| Pricing summaryi | Enterprise · Contact sales | 1 published plans |
| Categoriesi |
Capability matrix
Developer-facing capabilities and access signals for Castelion and Path Robotics.
| Capability | Castelion | Path 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 Undisclosed)
- Higher Neuron score (71 vs 16)
- Newer company (2022)
🔵 Strengths of Path Robotics
- Strong in Defense AI
Which should you choose?
Choose Path Robotics 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 Path Robotics — which is better?
It depends on your priority. Castelion has raised more capital and is the more established option; Path Robotics has broader feature depth. See the side-by-side table above.
Is Castelion cheaper than Path Robotics?
No — Path Robotics's cheapest paid plan is Enterprise · Contact sales, while Castelion's is Enterprise · Contact sales.
Do Castelion and Path Robotics offer free plans?
Castelion: Paid only. Path Robotics: Paid only.
Explore more Defense AI tools
Contextual paths to related AI startups, deals and rankings.