Celestial AI vs MatX
Which Infrastructure AI tool is better in 2026?
Celestial AI
Photonic Fabric optical interconnect for AI infrastructure
MatX
Chips built from the ground up for frontier large language models
Side-by-side
MatX is the more established option (raised $545M); pricing is comparable on both sides.
| Metric | Celestial AI | MatX |
|---|---|---|
| Taglinei | Photonic Fabric optical interconnect for AI infrastructure | Chips built from the ground up for frontier large language models |
| Foundedi | 2020🏆 | 2024 |
| HQi | Santa Clara, United States | Mountain View, US |
| Employeesi | — | 11-50🏆 |
| Neuron scorei | 77🏆 | 60 |
| Total fundingi | $515M | $545M🏆 |
| Latest roundi | Series C1 · Mar 2025 | Series B · Feb 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 | Custom | Free |
| Categoriesi |
Capability matrix
Developer-facing capabilities and access signals for Celestial AI and MatX.
| Capability | Celestial AI | MatX |
|---|---|---|
| MCP support | ✗ | ✗ |
| Public API | ✗ | ✗ |
| Webhooks | ✗ | ✗ |
| OAuth 2.0 | ✗ | ✗ |
| SDK languages | — | — |
| Free plan | ✗ | ✓ |
| Free trial | ✗ | ✓ |
| Verified | ✗ | ✗ |
| Active deal | ✗ | ✗ |
🟢 Strengths of Celestial AI
- Higher Neuron score (77 vs 60)
- More mature (2020)
🔵 Strengths of MatX
- Has raised more capital ($545M vs $515M)
- Offers a free plan
- Offers a free trial
- Newer company (2024)
Which should you choose?
Choose MatX if price matters most — it starts at Free, which is friendlier for teams watching burn. Both AI Infrastructure tools ship core features, so the cost delta often decides it for small teams and solo operators.
Choose MatX if you want the most established option — it has raised $545M, 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
Celestial AI vs MatX — which is better?
It depends on your priority. Celestial AI is the leaner option; MatX has broader feature depth. See the side-by-side table above.
Is Celestial AI cheaper than MatX?
No — MatX's cheapest paid plan is Free, while Celestial AI's is Custom.
Do Celestial AI and MatX offer free plans?
Celestial AI: Paid only. MatX: Yes, has a free plan.
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