Astranis vs Castelion
Which Aerospace AI tool is better in 2026?
Astranis
The world's only dedicated satellite networks providing flexible, resilient, high-speed communications for global customers.
Castelion
Mass-producing affordable hypersonic weapons for defense
Side-by-side
Castelion is the more established option (raised $1.2B); pricing is comparable on both sides.
| Metric | Astranis | Castelion |
|---|---|---|
| Taglinei | The world's only dedicated satellite networks providing flexible, resilient, high-speed communications for global customers. | Mass-producing affordable hypersonic weapons for defense |
| Foundedi | 2015🏆 | 2022 |
| HQi | San Francisco, US | El Segundo, US |
| Employeesi | 201-500 | 201-500🏆 |
| Neuron scorei | 60 | 71🏆 |
| Total fundingi | $1.2B | $1.2B🏆 |
| Latest roundi | Series E · May 2026 | series-c · Aug 2026 |
| Valuationi | $2.8B🏆 | — |
| Cheapest paid plani | — | Pricing not disclosed |
| Free plani | ✗ | ✗ |
| Free triali | ✗ | ✗ |
| Top tier pricei | Custom Satellite Services · Contact sales | Pricing not disclosed |
| Pricing summaryi | 1 published plans | Enterprise · Contact sales |
| Categoriesi |
Capability matrix
Developer-facing capabilities and access signals for Astranis and Castelion.
| Capability | Astranis | Castelion |
|---|---|---|
| MCP support | ✗ | ✗ |
| Public API | ✗ | ✗ |
| Webhooks | ✗ | ✗ |
| OAuth 2.0 | ✗ | ✗ |
| SDK languages | — | — |
| Free plan | ✗ | ✗ |
| Free trial | ✗ | ✗ |
| Verified | ✗ | ✗ |
| Active deal | ✗ | ✗ |
🟢 Strengths of Astranis
- More mature (2015)
🔵 Strengths of Castelion
- Has raised more capital ($1.2B vs $1.2B)
- Higher Neuron score (71 vs 60)
- Newer company (2022)
Which should you choose?
Choose Castelion if price matters most — it starts at Enterprise · Contact sales, which is friendlier for teams watching burn. Both AI Aerospace 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
Astranis vs Castelion — which is better?
It depends on your priority. Astranis is the leaner option; Castelion has broader feature depth. See the side-by-side table above.
Is Astranis cheaper than Castelion?
No — Castelion's cheapest paid plan is Enterprise · Contact sales, while Astranis's is Enterprise · Contact sales.
Do Astranis and Castelion offer free plans?
Astranis: Paid only. Castelion: Paid only.
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