# AI Shield M99 vs Nestria AI: side-by-side comparison (2026)

[AI Shield M99](https://cybersectools.com/tools/ai-shield-m99) is a commercial [agentic AI security](https://cybersectools.com/categories/agentic-ai-security) solution by [Red Specter Security](https://cybersectools.com/companies/red-specter-security). [Nestria AI](https://cybersectools.com/tools/nestria-ai) is a commercial [agentic AI security](https://cybersectools.com/categories/agentic-ai-security) solution by [Nestria AI](https://cybersectools.com/companies/nestria-ai). Features, integrations, deployment and the company behind each one, side by side.

Need the answer fast? [Best Agentic AI Security Solutions for Business](https://cybersectools.com/shortlists/best-agentic-ai-security-solutions) picks CrowdStrike Falcon Guardian, Rubrik Agent Cloud, Silverfort AI Agent Security and 4 more.

## Side-by-side comparison

| | AI Shield M99 | Nestria AI |
|---|---|---|
| Pricing model | Commercial | Commercial |
| Category | Agentic AI Security | Agentic AI Security |
| Verified | No | No |
| Deployment type | On-Premises | Hybrid |
| Company size fit | Mid-Market, Enterprise | Mid-Market, Enterprise |
| Company | Red Specter Security | Nestria AI |
| Headquarters | – | – |

### Use cases and capabilities

| | AI Shield M99 | Nestria AI |
|---|---|---|
| Agentic AI Security | Yes | Yes |
| LLM Security | Yes | Yes |
| Runtime Security | Yes | Yes |
| Anomaly Detection | Yes | – |
| Kubernetes Security | Yes | – |
| Lambda | Yes | – |
| AWS | Yes | – |
| Isolation | Yes | – |
| Alerting | Yes | – |
| AI Governance | – | Yes |
| LLM Guardrails | – | Yes |
| GenAI Security | – | Yes |
| Generative AI | – | Yes |
| Prompt Injection | – | Yes |
| AI Compliance | – | Yes |

### Core features

**AI Shield M99**

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

**Nestria AI**

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

### Integrations

**AI Shield M99**

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

**Nestria AI**

No integrations listed.

## Which one fits you

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

- [AI Shield M99](https://cybersectools.com/tools/ai-shield-m99) fits if you need to run it on your own servers.
- [Nestria AI](https://cybersectools.com/tools/nestria-ai) fits if you need both cloud and on-premises options.

## AI Shield M99 vs Nestria AI FAQ

Common questions when comparing AI Shield M99 vs Nestria AI for agentic AI security.

### What is the difference between AI Shield M99 and Nestria AI?

**AI Shield M99**: AI agent kill switch with 6-level graduated response and 7-layer termination, built by Red Specter Security.

**Nestria AI**: Governance and security platform for agentic AI in regulated enterprise workflows, built by Nestria AI.

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

### Who makes AI Shield M99 and Nestria AI?

**AI Shield M99** is made by Red Specter Security. **Nestria AI** is made by Nestria AI. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is AI Shield M99 a good alternative to Nestria AI?

Often, yes. AI Shield M99 and Nestria AI are both Agentic AI Security products, and both cover Agentic AI Security, LLM Security, Runtime Security. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [AI Shield M99 vs Onyx Platform](https://cybersectools.com/compare/ai-shield-m99-vs-onyx-platform)
- [AI Shield M99 vs CodeIntegrity AARM Platform](https://cybersectools.com/compare/ai-shield-m99-vs-codeintegrity-aarm-platform)
- [AI Shield M99 vs Wider Security AEGIS](https://cybersectools.com/compare/ai-shield-m99-vs-wider-security-aegis)
- [Nestria AI vs Onyx Platform](https://cybersectools.com/compare/nestria-ai-vs-onyx-platform)
- [Nestria AI vs CodeIntegrity AARM Platform](https://cybersectools.com/compare/codeintegrity-aarm-platform-vs-nestria-ai)
- [Nestria AI vs Wider Security AEGIS](https://cybersectools.com/compare/nestria-ai-vs-wider-security-aegis)

## Alternatives to each

- [See all AI Shield M99 alternatives](https://cybersectools.com/alternatives/ai-shield-m99)
- [See all Nestria AI alternatives](https://cybersectools.com/alternatives/nestria-ai)

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Source: https://cybersectools.com/compare/ai-shield-m99-vs-nestria-ai

For AI agents: each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/ai-shield-m99.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md.

More on AI Shield M99 and Nestria AI: 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