CuspAI vs Silurian
Which Climate AI tool is better in 2026?
CuspAI
AI foundation models that act as a search engine for new materials.
Silurian
Earth intelligence company building foundation models to simulate the planet, starting with
Side-by-side
CuspAI is the more established option (raised $100M); pricing is comparable on both sides.
| Metric | CuspAI | Silurian |
|---|---|---|
| Taglinei | AI foundation models that act as a search engine for new materials. | Earth intelligence company building foundation models to simulate the planet, starting with |
| Foundedi | 2024 | 2024 |
| HQi | Cambridge, GB | — |
| Employeesi | 11-50 | 11-50🏆 |
| Neuron scorei | 59🏆 | 54 |
| Total fundingi | $100M🏆 | $11M |
| Latest roundi | Series A · Sep 2025 | Seed |
| Valuationi | $520M🏆 | — |
| 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 | Free |
| Categoriesi |
Capability matrix
Developer-facing capabilities and access signals for CuspAI and Silurian.
| Capability | CuspAI | Silurian |
|---|---|---|
| MCP support | ✗ | ✗ |
| Public API | ✗ | ✗ |
| Webhooks | ✗ | ✗ |
| OAuth 2.0 | ✗ | ✗ |
| SDK languages | — | — |
| Free plan | ✗ | ✓ |
| Free trial | ✗ | ✓ |
| Verified | ✗ | ✗ |
| Active deal | ✗ | ✗ |
🟢 Strengths of CuspAI
- Has raised more capital ($100M vs $11M)
- Higher Neuron score (59 vs 54)
🔵 Strengths of Silurian
- Offers a free plan
- Offers a free trial
Which should you choose?
Choose Silurian if price matters most — it starts at Free, which is friendlier for teams watching burn. Both AI Climate tools ship core features, so the cost delta often decides it for small teams and solo operators.
Choose CuspAI if you want the most established option — it has raised $100M, 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
CuspAI vs Silurian — which is better?
It depends on your priority. CuspAI has raised more capital and is the more established option; Silurian has broader feature depth. See the side-by-side table above.
Is CuspAI cheaper than Silurian?
No — Silurian's cheapest paid plan is Free, while CuspAI's is Enterprise · Contact sales.
Do CuspAI and Silurian offer free plans?
CuspAI: Paid only. Silurian: Yes, has a free plan.
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