# Operant AI AI Gatekeeper vs TrojAI Defend: side-by-side comparison (2026)

[Operant AI AI Gatekeeper](https://cybersectools.com/tools/operant-ai-ai-gatekeeper) is a commercial [LLM guardrails](https://cybersectools.com/categories/llm-guardrails) solution by [Operant AI](https://cybersectools.com/companies/operant-ai). [TrojAI Defend](https://cybersectools.com/tools/trojai-defend) is a commercial [LLM guardrails](https://cybersectools.com/categories/llm-guardrails) solution by [A10 Networks](https://cybersectools.com/companies/a10-networks). Features, integrations, deployment and the company behind each one, side by side.

## Side-by-side comparison

| | Operant AI AI Gatekeeper | TrojAI Defend |
|---|---|---|
| Pricing model | Commercial | Commercial |
| Category | LLM Guardrails | LLM Guardrails |
| Verified | No | No |
| Deployment type | Cloud | Cloud |
| Company size fit | Mid-Market, Enterprise | SMB, Mid-Market, Enterprise |
| Company | Operant AI | A10 Networks |
| Headquarters | – | – |

### Use cases and capabilities

| | Operant AI AI Gatekeeper | TrojAI Defend |
|---|---|---|
| Cloud Native | Yes | – |
| Kubernetes | Yes | – |
| Content Filtering | – | Yes |
| Browser Security | – | Yes |
| AI Firewall | – | Yes |

### Core features

**Operant AI AI Gatekeeper**

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

**TrojAI Defend**

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

### Integrations

**Operant AI AI Gatekeeper**

1 integration listed. Sign in on the page to see them.

**TrojAI Defend**

2 integrations 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.

- [TrojAI Defend](https://cybersectools.com/tools/trojai-defend) fits if you are a small business.

## Operant AI AI Gatekeeper vs TrojAI Defend FAQ

Common questions when comparing Operant AI AI Gatekeeper vs TrojAI Defend for LLM guardrails.

### What is the difference between Operant AI AI Gatekeeper and TrojAI Defend?

**Operant AI AI Gatekeeper**: Runtime AI security platform protecting GenAI apps from models to APIs. Built by Operant AI.

**TrojAI Defend**: AI firewall for runtime protection of AI models, applications, and agents. Built by A10 Networks.

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

### Who makes Operant AI AI Gatekeeper and TrojAI Defend?

**Operant AI AI Gatekeeper** is made by Operant AI. **TrojAI Defend** is made by A10 Networks. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is Operant AI AI Gatekeeper a good alternative to TrojAI Defend?

Often, yes. Operant AI AI Gatekeeper and TrojAI Defend are both LLM Guardrails products. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [Operant AI AI Gatekeeper vs Akamai Firewall for AI](https://cybersectools.com/compare/akamai-firewall-for-ai-vs-operant-ai-ai-gatekeeper)
- [Operant AI AI Gatekeeper vs RealmGuard](https://cybersectools.com/compare/operant-ai-ai-gatekeeper-vs-realm-labs-platform)
- [Operant AI AI Gatekeeper vs CloudMatos Prompt Firewall](https://cybersectools.com/compare/cloudmatos-prompt-firewall-vs-operant-ai-ai-gatekeeper)
- [TrojAI Defend vs Akamai Firewall for AI](https://cybersectools.com/compare/akamai-firewall-for-ai-vs-trojai-defend)
- [TrojAI Defend vs RealmGuard](https://cybersectools.com/compare/realm-labs-platform-vs-trojai-defend)
- [TrojAI Defend vs CloudMatos Prompt Firewall](https://cybersectools.com/compare/cloudmatos-prompt-firewall-vs-trojai-defend)

## Alternatives to each

- [See all Operant AI AI Gatekeeper alternatives](https://cybersectools.com/alternatives/operant-ai-ai-gatekeeper)
- [See all TrojAI Defend alternatives](https://cybersectools.com/alternatives/trojai-defend)

---

Source: https://cybersectools.com/compare/operant-ai-ai-gatekeeper-vs-trojai-defend

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

More on Operant AI AI Gatekeeper and TrojAI Defend: 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