# First Recon AI Firewall vs Sun.Security Sun: side-by-side comparison (2026)

[First Recon AI Firewall](https://cybersectools.com/tools/first-recon-ai-firewall) is a commercial [LLM guardrails](https://cybersectools.com/categories/llm-guardrails) solution by [First Recon AI](https://cybersectools.com/companies/first-recon-ai). [Sun.Security Sun](https://cybersectools.com/tools/sunsecurity-sun) is a commercial [agentic AI security](https://cybersectools.com/categories/agentic-ai-security) solution by [Sun.Security](https://cybersectools.com/companies/sunsecurity). Features, integrations, deployment and the company behind each one, side by side.

## Side-by-side comparison

| | First Recon AI Firewall | Sun.Security Sun |
|---|---|---|
| Pricing model | Commercial | Commercial |
| Category | LLM Guardrails | Agentic AI Security |
| Verified | No | No |
| Deployment type | Hybrid | Hybrid |
| Company size fit | SMB, Mid-Market, Enterprise | Mid-Market, Enterprise |
| Company | First Recon AI | Sun.Security |
| Headquarters | – | – |

### Use cases and capabilities

| | First Recon AI Firewall | Sun.Security Sun |
|---|---|---|
| AI Firewall | Yes | – |
| LLM Guardrails | Yes | – |
| Prompt Injection | Yes | Yes |
| LLM Security | Yes | – |
| AI Observability | Yes | Yes |
| Data Exfiltration | Yes | Yes |
| GenAI Security | Yes | – |
| Content Filtering | Yes | – |
| Agentic AI Security | Yes | Yes |
| Policy | Yes | – |
| AI Governance | – | Yes |
| MCP Security | – | Yes |
| Generative AI | – | Yes |
| Anomaly Detection | – | Yes |
| Visibility | – | Yes |
| Runtime Security | – | Yes |

### Core features

**First Recon AI Firewall**

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

**Sun.Security Sun**

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

### Integrations

**First Recon AI Firewall**

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

**Sun.Security Sun**

4 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.

- [First Recon AI Firewall](https://cybersectools.com/tools/first-recon-ai-firewall) fits if you are a small business.

## First Recon AI Firewall vs Sun.Security Sun FAQ

Common questions when comparing First Recon AI Firewall vs Sun.Security Sun for LLM guardrails.

### What is the difference between First Recon AI Firewall and Sun.Security Sun?

**First Recon AI Firewall**: Inline firewall inspecting AI prompts/responses for injections & policy violations. Built by First Recon AI.

**Sun.Security Sun**: Security platform for discovering, assessing, and controlling AI agent behavior. Built by Sun.Security.

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

### Who makes First Recon AI Firewall and Sun.Security Sun?

**First Recon AI Firewall** is made by First Recon AI. **Sun.Security Sun** is made by Sun.Security. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is First Recon AI Firewall a good alternative to Sun.Security Sun?

In part. First Recon AI Firewall and Sun.Security Sun are not in the same category on CybersecTools. Both cover Agentic AI Security, AI Observability, Data Exfiltration. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [First Recon AI Firewall vs Airia AI Platform Guardrails](https://cybersectools.com/compare/airia-ai-platform-guardrails-vs-first-recon-ai-firewall)
- [First Recon AI Firewall vs ThirdLaw AI Control Layer](https://cybersectools.com/compare/first-recon-ai-firewall-vs-thirdlaw-ai-control-layer)
- [First Recon AI Firewall vs Promptfoo Guardrails](https://cybersectools.com/compare/first-recon-ai-firewall-vs-promptfoo-guardrails)
- [Sun.Security Sun vs Airia AI Platform Guardrails](https://cybersectools.com/compare/airia-ai-platform-guardrails-vs-sunsecurity-sun)
- [Sun.Security Sun vs ThirdLaw AI Control Layer](https://cybersectools.com/compare/sunsecurity-sun-vs-thirdlaw-ai-control-layer)
- [Sun.Security Sun vs Promptfoo Guardrails](https://cybersectools.com/compare/promptfoo-guardrails-vs-sunsecurity-sun)

## Alternatives to each

- [See all First Recon AI Firewall alternatives](https://cybersectools.com/alternatives/first-recon-ai-firewall)
- [See all Sun.Security Sun alternatives](https://cybersectools.com/alternatives/sunsecurity-sun)

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Source: https://cybersectools.com/compare/first-recon-ai-firewall-vs-sunsecurity-sun

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

More on First Recon AI Firewall and Sun.Security Sun: 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