HiddenLayer vs Pillar Security
Which Governance AI tool is better in 2026?
HiddenLayer
Total AI Security for the enterprise.
Pillar Security
The security platform for AI applications and agents
Side-by-side
Pillar Security is the more established option (raised $9M); pricing is comparable on both sides.
| Metric | HiddenLayer | Pillar Security |
|---|---|---|
| Taglinei | Total AI Security for the enterprise. | The security platform for AI applications and agents |
| Foundedi | — | 2023🏆 |
| HQi | US | Tel Aviv, IL |
| Employeesi | — | 11-50🏆 |
| Neuron scorei | 19 | 53🏆 |
| Total fundingi | Undisclosed | $9M🏆 |
| Latest roundi | — | Seed · Oct 2024 |
| Valuationi | — | — |
| 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 HiddenLayer and Pillar Security.
| Capability | HiddenLayer | Pillar Security |
|---|---|---|
| MCP support | ✗ | ✓ |
| Public API | ✗ | ✓ |
| Webhooks | ✗ | ✗ |
| OAuth 2.0 | ✗ | ✗ |
| SDK languages | — | — |
| Free plan | ✗ | ✓ |
| Free trial | ✗ | ✓ |
| Verified | ✗ | ✗ |
| Active deal | ✗ | ✗ |
🟢 Strengths of HiddenLayer
- Strong in AI Governance
🔵 Strengths of Pillar Security
- Has raised more capital ($9M vs Undisclosed)
- Higher Neuron score (53 vs 19)
- Offers a free plan
- Offers a free trial
Which should you choose?
Choose Pillar Security if price matters most — it starts at Free, which is friendlier for teams watching burn. Both AI Governance tools ship core features, so the cost delta often decides it for small teams and solo operators.
Choose Pillar Security if you want the most established option — it has raised $9M, 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
HiddenLayer vs Pillar Security — which is better?
It depends on your priority. HiddenLayer is the leaner option; Pillar Security has broader feature depth. See the side-by-side table above.
Is HiddenLayer cheaper than Pillar Security?
No — Pillar Security's cheapest paid plan is Free, while HiddenLayer's is Enterprise · Contact sales.
Do HiddenLayer and Pillar Security offer free plans?
HiddenLayer: Paid only. Pillar Security: Yes, has a free plan.
Explore more AI Governance tools
Contextual paths to related AI startups, deals and rankings.