Celestial AI vs Modular
Which Infrastructure AI tool is better in 2026?
Celestial AI
Photonic Fabric optical interconnect for AI infrastructure
Modular
A unified AI inference platform for high-performance, portable compute, enabling full optimisations from GPU kernel to API endpoint.
Side-by-side
Celestial AI is the more established option (raised $515M); pricing is comparable on both sides.
| Metric | Celestial AI | Modular |
|---|---|---|
| Taglinei | Photonic Fabric optical interconnect for AI infrastructure | A unified AI inference platform for high-performance, portable compute, enabling full optimisations from GPU kernel to API endpoint. |
| Foundedi | 2020🏆 | — |
| HQi | Santa Clara, United States | US |
| Employeesi | — | — |
| Neuron scorei | 77🏆 | 19 |
| Total fundingi | $515M🏆 | Undisclosed |
| Latest roundi | Series C1 · Mar 2025 | — |
| Valuationi | — | — |
| Cheapest paid plani | Pricing not disclosed | — |
| Free plani | ✗ | ✓ Playground |
| Free triali | ✗ | ✓ |
| Top tier pricei | Pricing not disclosed | Enterprise · Contact sales |
| Pricing summaryi | Custom | 2 published plans |
| Categoriesi |
Capability matrix
Developer-facing capabilities and access signals for Celestial AI and Modular.
| Capability | Celestial AI | Modular |
|---|---|---|
| MCP support | ✗ | ✗ |
| Public API | ✗ | ✗ |
| Webhooks | ✗ | ✗ |
| OAuth 2.0 | ✗ | ✗ |
| SDK languages | — | — |
| Free plan | ✗ | ✓ |
| Free trial | ✗ | ✓ |
| Verified | ✗ | ✗ |
| Active deal | ✗ | ✗ |
🟢 Strengths of Celestial AI
- Has raised more capital ($515M vs Undisclosed)
- Higher Neuron score (77 vs 19)
- Newer company (2020)
🔵 Strengths of Modular
- Offers a free plan
- Offers a free trial
Which should you choose?
Choose Modular if price matters most — it starts at Enterprise · Contact sales, 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 Celestial AI if you want the most established option — it has raised $515M, 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 Modular — which is better?
It depends on your priority. Celestial AI has raised more capital and is the more established option; Modular has broader feature depth. See the side-by-side table above.
Is Celestial AI cheaper than Modular?
No — Modular's cheapest paid plan is Free, while Celestial AI's is Custom.
Do Celestial AI and Modular offer free plans?
Celestial AI: Paid only. Modular: Yes, has a free plan.
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