# Permit Enterprise-Grade AI Agent Security vs TrustFour: side-by-side comparison (2026)

[Permit Enterprise-Grade AI Agent Security](https://cybersectools.com/tools/permit-enterprise-grade-ai-agent-security) is a commercial [non-human identity](https://cybersectools.com/categories/non-human-identity) solution by [Permit.io](https://cybersectools.com/companies/permitio). [TrustFour](https://cybersectools.com/tools/trustfour) is a commercial [non-human identity](https://cybersectools.com/categories/non-human-identity) solution by [TrustFour](https://cybersectools.com/companies/trustfour). Features, integrations, deployment and the company behind each one, side by side.

## Side-by-side comparison

| | Permit Enterprise-Grade AI Agent Security | TrustFour |
|---|---|---|
| Pricing model | Commercial | Commercial |
| Category | Non-Human Identity | Non-Human Identity |
| Verified | No | No |
| Deployment type | Cloud | Hybrid |
| Company size fit | Mid-Market, Enterprise | Mid-Market, Enterprise |
| Company | Permit.io | TrustFour |
| Headquarters | – | – |

### Use cases and capabilities

| | Permit Enterprise-Grade AI Agent Security | TrustFour |
|---|---|---|
| Authorization | Yes | – |
| Agentic AI Security | Yes | Yes |
| Non-Human Identity | – | Yes |
| TLS | – | Yes |
| Workload Security | – | Yes |
| Least Privilege | – | Yes |
| Quantum Safe | – | Yes |
| Kubernetes Security | – | Yes |
| GenAI Security | – | Yes |
| Lateral Movement | – | Yes |

### Core features

**Permit Enterprise-Grade AI Agent Security**

No features listed.

**TrustFour**

9 features listed. Sign in on the page to see them.

## Which one fits you

Based on what each listing shows: deployment, company size, price and open source.

- [Permit Enterprise-Grade AI Agent Security](https://cybersectools.com/tools/permit-enterprise-grade-ai-agent-security) fits if you want a cloud product.
- [TrustFour](https://cybersectools.com/tools/trustfour) fits if you need both cloud and on-premises options.

## Permit Enterprise-Grade AI Agent Security vs TrustFour FAQ

Common questions when comparing Permit Enterprise-Grade AI Agent Security vs TrustFour for non-human identity.

### What is the difference between Permit Enterprise-Grade AI Agent Security and TrustFour?

**Permit Enterprise-Grade AI Agent Security**: Enterprise security platform for AI agents from Permit. Built by Permit.io.

**TrustFour**: TLS control plane securing NHIs via mTLS, ephemeral PSKs, and workload policy. Built by TrustFour.

The table above shows where their features, integrations, deployment and company size fit differ.

### Who makes Permit Enterprise-Grade AI Agent Security and TrustFour?

**Permit Enterprise-Grade AI Agent Security** is made by Permit.io. **TrustFour** is made by TrustFour. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is Permit Enterprise-Grade AI Agent Security a good alternative to TrustFour?

Often, yes. Permit Enterprise-Grade AI Agent Security and TrustFour are both Non-Human Identity products, and both cover Agentic AI Security. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [Permit Enterprise-Grade AI Agent Security vs Riptides](https://cybersectools.com/compare/permit-enterprise-grade-ai-agent-security-vs-riptides)
- [Permit Enterprise-Grade AI Agent Security vs Gradient Securing Agentic Identity](https://cybersectools.com/compare/gradient-securing-agentic-identity-vs-permit-enterprise-grade-ai-agent-security)
- [Permit Enterprise-Grade AI Agent Security vs Agentic Governance](https://cybersectools.com/compare/agentic-governance-vs-permit-enterprise-grade-ai-agent-security)
- [TrustFour vs Riptides](https://cybersectools.com/compare/riptides-vs-trustfour)
- [TrustFour vs Gradient Securing Agentic Identity](https://cybersectools.com/compare/gradient-securing-agentic-identity-vs-trustfour)
- [TrustFour vs Agentic Governance](https://cybersectools.com/compare/agentic-governance-vs-trustfour)

## Alternatives to each

- [See all Permit Enterprise-Grade AI Agent Security alternatives](https://cybersectools.com/alternatives/permit-enterprise-grade-ai-agent-security)
- [See all TrustFour alternatives](https://cybersectools.com/alternatives/trustfour)

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Source: https://cybersectools.com/compare/permit-enterprise-grade-ai-agent-security-vs-trustfour

For AI agents: each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/permit-enterprise-grade-ai-agent-security.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md.

More on Permit Enterprise-Grade AI Agent Security and TrustFour: funding, momentum, hiring and news, plus the full product and company record, are available through the Mandos MCP Server (paid plans), which connects to AI assistants: https://mandos.io/mcp?utm_source=cybersectools.com&utm_medium=compare-md