Leo AI vs Spline
Which 3D Generation AI tool is better in 2026?
Leo AI
The first generative AI copilot built for mechanical engineering and CAD
Spline
Design and collaborate in 3D directly in your browser with real-time capabilities.
Side-by-side
Leo AI is the more established option (raised $9.7M), but Spline is cheaper to start.
| Metric | Leo AI | Spline |
|---|---|---|
| Taglinei | The first generative AI copilot built for mechanical engineering and CAD | Design and collaborate in 3D directly in your browser with real-time capabilities. |
| Foundedi | 2023🏆 | — |
| HQi | Cambridge, US | — |
| Employeesi | 11-50🏆 | — |
| Neuron scorei | 62🏆 | 60 |
| Total fundingi | $9.7M🏆 | Undisclosed |
| Latest roundi | Seed | — |
| Valuationi | — | — |
| Cheapest paid plani | Pricing not disclosed | Super · $7/mo🏆 |
| Free plani | ✓ | ✓ Starter |
| Free triali | ✓ | ✗ |
| Top tier pricei | Pricing not disclosed | Team · $15/mo |
| Pricing summaryi | Free | 3 published plans |
| Categoriesi |
Capability matrix
Developer-facing capabilities and access signals for Leo AI and Spline.
| Capability | Leo AI | Spline |
|---|---|---|
| MCP support | ✗ | ✗ |
| Public API | ✗ | ✗ |
| Webhooks | ✗ | ✗ |
| OAuth 2.0 | ✗ | ✗ |
| SDK languages | — | — |
| Free plan | ✓ | ✓ |
| Free trial | ✓ | ✗ |
| Verified | ✗ | ✗ |
| Active deal | ✗ | ✗ |
🟢 Strengths of Leo AI
- Has raised more capital ($9.7M vs Undisclosed)
- Higher Neuron score (62 vs 60)
- Offers a free trial
- Newer company (2023)
🔵 Strengths of Spline
- Lower starting price ($7/mo)
Which should you choose?
Choose Spline if price matters most — it starts at Free · From $7/mo, which is friendlier for teams watching burn. Both 3D Generation tools ship core features, so the cost delta often decides it for small teams and solo operators.
Choose Leo AI if you want the most established option — it has raised $9.7M, 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
Leo AI vs Spline — which is better?
It depends on your priority. Leo AI has raised more capital and is the more established option; Spline is cheaper to start. See the side-by-side table above.
Is Leo AI cheaper than Spline?
No — Spline's cheapest paid plan is Super · $7/mo, while Leo AI's is Free.
Do Leo AI and Spline offer free plans?
Leo AI: Yes, has a free plan. Spline: Yes, has a free plan.
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