Harmonic vs SpAItial
Which Foundation Models AI tool is better in 2026?
Harmonic
Mathematical superintelligence with hallucination-free, verified reasoning
SpAItial
Spatial foundation models that generate full, coherent 3D environments from a prompt
Side-by-side
Harmonic is the more established option (raised $295M); pricing is comparable on both sides.
| Metric | Harmonic | SpAItial |
|---|---|---|
| Taglinei | Mathematical superintelligence with hallucination-free, verified reasoning | Spatial foundation models that generate full, coherent 3D environments from a prompt |
| Foundedi | 2023🏆 | 2025 |
| HQi | Palo Alto, US | Munich, DE |
| Employeesi | 11-50🏆 | 1-10 |
| Neuron scorei | 80🏆 | 67 |
| Total fundingi | $295M🏆 | $13M |
| Latest roundi | Series C · Nov 2025 | Seed · May 2025 |
| Valuationi | $1.4B🏆 | — |
| Cheapest paid plani | Pricing not disclosed | Pricing not disclosed |
| Free plani | ✓ | ✗ |
| Free triali | ✓ | ✓ |
| Top tier pricei | Pricing not disclosed | Pricing not disclosed |
| Pricing summaryi | Free | Free trial |
| Categoriesi |
Capability matrix
Developer-facing capabilities and access signals for Harmonic and SpAItial.
| Capability | Harmonic | SpAItial |
|---|---|---|
| MCP support | ✗ | ✗ |
| Public API | ✓ | ✗ |
| Webhooks | ✗ | ✗ |
| OAuth 2.0 | ✗ | ✗ |
| SDK languages | — | — |
| Free plan | ✓ | ✗ |
| Free trial | ✓ | ✓ |
| Verified | ✗ | ✗ |
| Active deal | ✗ | ✗ |
🟢 Strengths of Harmonic
- Has raised more capital ($295M vs $13M)
- Higher Neuron score (80 vs 67)
- Offers a free plan
- More mature (2023)
🔵 Strengths of SpAItial
- Newer company (2025)
Which should you choose?
Choose SpAItial if price matters most — it starts at Free trial, which is friendlier for teams watching burn. Both Foundation Models tools ship core features, so the cost delta often decides it for small teams and solo operators.
Choose Harmonic if you want the most established option — it has raised $295M, 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
Harmonic vs SpAItial — which is better?
It depends on your priority. Harmonic has raised more capital and is the more established option; SpAItial has broader feature depth. See the side-by-side table above.
Is Harmonic cheaper than SpAItial?
No — SpAItial's cheapest paid plan is Free trial, while Harmonic's is Free.
Do Harmonic and SpAItial offer free plans?
Harmonic: Yes, has a free plan. SpAItial: Free trial only.
Explore more Foundation Models tools
Contextual paths to related AI startups, deals and rankings.