Axiom Math vs Harmonic
Which Foundation Models AI tool is better in 2026?
Axiom Math
AI mathematician that generates and proves new mathematical knowledge
Harmonic
Mathematical superintelligence with hallucination-free, verified reasoning
Side-by-side
Harmonic is the more established option (raised $295M); pricing is comparable on both sides.
| Metric | Axiom Math | Harmonic |
|---|---|---|
| Taglinei | AI mathematician that generates and proves new mathematical knowledge | Mathematical superintelligence with hallucination-free, verified reasoning |
| Foundedi | 2025 | 2023🏆 |
| HQi | San Francisco, US | Palo Alto, US |
| Employeesi | 11-50 | 11-50 |
| Neuron scorei | 70 | 80🏆 |
| Total fundingi | $264M | $295M🏆 |
| Latest roundi | Series A · Mar 2026 | Series C · Nov 2025 |
| Valuationi | $1.6B🏆 | $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 |
| Categoriesi |
Capability matrix
Developer-facing capabilities and access signals for Axiom Math and Harmonic.
| Capability | Axiom Math | Harmonic |
|---|---|---|
| MCP support | ✗ | ✗ |
| Public API | ✗ | ✓ |
| Webhooks | ✗ | ✗ |
| OAuth 2.0 | ✗ | ✗ |
| SDK languages | — | — |
| Free plan | ✓ | ✓ |
| Free trial | ✓ | ✓ |
| Verified | ✗ | ✗ |
| Active deal | ✗ | ✗ |
🟢 Strengths of Axiom Math
- Newer company (2025)
🔵 Strengths of Harmonic
- Has raised more capital ($295M vs $264M)
- Higher Neuron score (80 vs 70)
- More mature (2023)
Which should you choose?
Choose Harmonic if price matters most — it starts at Free, 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
Axiom Math vs Harmonic — which is better?
It depends on your priority. Axiom Math is the leaner option; Harmonic has broader feature depth. See the side-by-side table above.
Is Axiom Math cheaper than Harmonic?
No — Harmonic's cheapest paid plan is Free, while Axiom Math's is Free.
Do Axiom Math and Harmonic offer free plans?
Axiom Math: Yes, has a free plan. Harmonic: Yes, has a free plan.
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