Best AI agent security platform

Combined ranking

1. 1
   Lakera Guard—10 pts

   Claude #1Gemini #1

   Best-in-class real-time prompt-injection and jailbreak detection fed by the Gandalf attack-data flywheel, low-latency drop-in API plus PII/data-leakage screening, and enterprise staying power since the 2025 Check Point acquisition; assumes the typical practitioner wants an accurate managed runtime detector over a DIY framework.

   Gemini Provides ultra-low latency, model-agnostic API filtering against prompt injections and data leaks powered by their massive Gandalf adversarial threat intelligence database.

   Where it falls short

   per Claude Detection-centric SaaS, not a full agent-governance suite — teams needing deep tool-call policy enforcement, fully self-hosted deployment, or bundled scanning/red-teaming must add other pieces, and its roadmap now rides on Check Point integration.

   per Gemini Acts primarily as a boundary filter, offering less native governance over complex agent actions, browser automation, or non-human identity permissions.

2. 2
   NeMo Guardrailsincumbent—7 pts

   Claude #3Gemini #2

   The premier open-source, programmable framework utilizing Colang to define rigid conversational pathways, effectively preventing off-topic drift and unsafe tool calls.

   Claude The strongest open-source programmable guardrails framework — composable input, output, and tool-execution rails, model-agnostic, free to self-host, and able to wire in third-party detectors (Prompt Shields, Llama Guard, Lakera) as checks; near-tie with Prisma AIRS but serves the build-it-yourself practitioner.

   Where it falls short

   per Claude It is orchestration, not detection — protection quality depends entirely on the checkers you integrate, and Colang configuration plus ongoing maintenance is real engineering work.

   per Gemini High learning curve and developer friction associated with writing and maintaining custom Colang policies rather than using automated security policies.

3. 3
   PPrisma AIRS—5 pts

   Claude #2Gemini #5

   The most complete commercial stack after absorbing Protect AI — model/artifact scanning, Recon automated red teaming, runtime guardrails, and agent protection in one platform with network-level enforcement; near-tie with NeMo Guardrails, ranked ahead on breadth for security-team buyers.

   Gemini A dominant enterprise AI security posture management platform offering automated red teaming, shadow AI discovery, and security for Model Context Protocol connections.

   Where it falls short

   per Claude Enterprise pricing and platform weight make it overkill for small app teams, and it pulls you into the Palo Alto ecosystem.

   per Gemini Prohibitively expensive and overly complex for small teams, requiring alignment with the broader Palo Alto Networks product ecosystem.

4. 4
   ZZenity—3 pts

   Claude —Gemini #3

   The leading dedicated security posture and runtime platform built specifically for agentic workflows, focusing on non-human identities, tool execution, and step-level governance.

   Where it falls short

   per Gemini Heavy enterprise focus makes it over-engineered and cost-prohibitive for simple, single-use consumer LLM applications.

5. 5
   Azure AI Content Safetyincumbent—2 pts

   Claude #4Gemini —

   The best managed default for Azure-hosted apps — cheap per-call jailbreak and indirect prompt-injection detection over user input, documents, and tool outputs, plus groundedness checks, natively integrated with Azure AI Foundry so there is no extra vendor to onboard.

   Where it falls short

   per Claude Azure-centric and classifier-scoped — limited tunability and little native tool-use policy control, a weak fit for teams running off-Azure.

6. 6
   Protect AI—2 pts

   Claude —Gemini #4

   An extensively modular, self-hostable open-source library featuring over 30 separate scanners for PII, secrets, and injections that ensures complete data residency.

   Where it falls short

   per Gemini Scaling, hosting, and optimizing the latency of the underlying scanners falls entirely on the developer's infrastructure team.

7. 7
   LlamaFirewallincumbent—1 pts

   Claude #5Gemini —

   The most agent-focused open-source option — PromptGuard 2 lightweight injection classifiers, AlignmentCheck to catch goal-hijacked tool use mid-trajectory, and CodeShield for unsafe generated code, all free and self-hostable with no data leaving your infra.

   Where it falls short

   per Claude A component library, not a product — no managed service, dashboards, or support, it demands engineering to assemble, and the small classifiers alone are bypassable without layered defenses.

Just missed the top 5

By model

Tracked by ModelsAgree · rank 1 = 5 pts … rank 5 = 1 pt · re-polled continuously