# FYEO Custom Fuzz Testing vs Tenzai: side-by-side comparison (2026)

[FYEO Custom Fuzz Testing](https://cybersectools.com/tools/fyeo-custom-fuzz-testing) is a commercial [smart-contract scanning & dev security](https://cybersectools.com/categories/smart-contract-scanning) solution by [FYEO](https://cybersectools.com/companies/fyeo). [Tenzai](https://cybersectools.com/tools/tenzai) is a commercial [penetration testing](https://cybersectools.com/categories/pentesting-tools) solution by [Tenzai](https://cybersectools.com/companies/tenzai). Features, integrations, deployment and the company behind each one, side by side.

## Side-by-side comparison

| | FYEO Custom Fuzz Testing | Tenzai |
|---|---|---|
| Pricing model | Commercial | Commercial |
| Category | Smart-Contract Scanning & Dev Security | Penetration Testing |
| Verified | No | No |
| Deployment type | Hybrid | Hybrid |
| Company size fit | Mid-Market, Enterprise | Mid-Market, Enterprise |
| Company | FYEO | Tenzai |
| Headquarters | – | – |

### Use cases and capabilities

| | FYEO Custom Fuzz Testing | Tenzai |
|---|---|---|
| Fuzzing | Yes | – |
| CI/CD | Yes | – |
| AI Pentesting | – | Yes |
| Agentic AI Security | – | Yes |
| Continuous Testing | – | Yes |
| Red Team | – | Yes |
| Vulnerability Exploitation | – | Yes |
| Penetration Testing Framework | – | Yes |
| Vulnerability | – | Yes |
| Web Security | – | Yes |
| App Security | – | Yes |

### Core features

**FYEO Custom Fuzz Testing**

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

**Tenzai**

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

### Integrations

**FYEO Custom Fuzz Testing**

No integrations listed.

**Tenzai**

2 integrations listed. Sign in on the page to see them.

## FYEO Custom Fuzz Testing vs Tenzai FAQ

Common questions when comparing FYEO Custom Fuzz Testing vs Tenzai for smart-contract scanning & dev security.

### What is the difference between FYEO Custom Fuzz Testing and Tenzai?

**FYEO Custom Fuzz Testing**: Custom blockchain fuzz testing service with bespoke harnesses & CI integration. Built by FYEO.

**Tenzai**: Agentic AI platform for continuous, autonomous penetration testing of enterprise apps. Built by Tenzai.

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

### Who makes FYEO Custom Fuzz Testing and Tenzai?

**FYEO Custom Fuzz Testing** is made by FYEO. **Tenzai** is made by Tenzai. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is FYEO Custom Fuzz Testing a good alternative to Tenzai?

In part. FYEO Custom Fuzz Testing and Tenzai are not in the same category on CybersecTools. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [FYEO Custom Fuzz Testing vs Olympix Enterprise-Grade Security Tools](https://cybersectools.com/compare/fyeo-custom-fuzz-testing-vs-olympix-enterprise-grade-security-tools)
- [FYEO Custom Fuzz Testing vs Dedge Security W3SPM](https://cybersectools.com/compare/dedge-security-w3spm-vs-fyeo-custom-fuzz-testing)
- [FYEO Custom Fuzz Testing vs CredShields SolidityScan](https://cybersectools.com/compare/credshields-solidityscan-vs-fyeo-custom-fuzz-testing)
- [Tenzai vs Olympix Enterprise-Grade Security Tools](https://cybersectools.com/compare/olympix-enterprise-grade-security-tools-vs-tenzai)
- [Tenzai vs Dedge Security W3SPM](https://cybersectools.com/compare/dedge-security-w3spm-vs-tenzai)
- [Tenzai vs CredShields SolidityScan](https://cybersectools.com/compare/credshields-solidityscan-vs-tenzai)

## Alternatives to each

- [See all FYEO Custom Fuzz Testing alternatives](https://cybersectools.com/alternatives/fyeo-custom-fuzz-testing)
- [See all Tenzai alternatives](https://cybersectools.com/alternatives/tenzai)

---

Source: https://cybersectools.com/compare/fyeo-custom-fuzz-testing-vs-tenzai

For AI agents: each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/fyeo-custom-fuzz-testing.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md.

More on FYEO Custom Fuzz Testing and Tenzai: 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