Features, pricing, ratings, and pros & cons — compared head-to-head.
CloudMatos Prompt Firewall is a commercial llm guardrails tool by CloudMatos. Lunar.dev AI Gateway is a free llm guardrails tool by Lunar.dev. Compare features, ratings, integrations, and community reviews side by side to find the best llm guardrails fit for your security stack.
Based on our analysis of NIST CSF 2.0 coverage, core features, integrations, company size fit, here is our conclusion:
Security teams deploying multiple LLM models across production workloads need CloudMatos Prompt Firewall to stop prompt injection and data exfiltration at inference time, not after the fact. The tool's zero-trust prompt filtering and real-time jailbreak signature detection address DE.CM and DE.AE functions that most guardrails treat as afterthoughts, while multi-model compatibility means you're not locked into OpenAI. Skip this if your LLM use is experimental or limited to a single vendor's API; the policy enforcement overhead assumes mature, compliance-driven deployments where audit trails matter as much as blocking attacks.
Security and platform teams managing multiple LLM providers across agents and applications need Lunar.dev AI Gateway to enforce consistent data governance before requests leave your infrastructure; the combination of prompt sanitization, fine-grained access controls with human-in-the-loop gating, and full token-level auditing directly addresses the control gap that exists between your apps and third-party LLM APIs. The free tier lets you test rate limiting and observability without commitment, which matters when LLM spend is unpredictable. Skip this if you're looking for a single unified platform covering fine-tuning, model governance, and post-response content filtering; Lunar.dev is explicitly designed for outbound traffic management and doesn't replace model evaluation or output scanning tools.
Firewall for LLM systems preventing prompt injection, data leaks & jailbreaks
API gateway for managing, securing, and observing outbound LLM traffic.
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Common questions about comparing CloudMatos Prompt Firewall vs Lunar.dev AI Gateway for your llm guardrails needs.
CloudMatos Prompt Firewall: Firewall for LLM systems preventing prompt injection, data leaks & jailbreaks. built by CloudMatos. Core capabilities include Prompt validation and sanitization, Response scrubbing and data redaction, Real-time threat detection with jailbreak signatures..
Lunar.dev AI Gateway: API gateway for managing, securing, and observing outbound LLM traffic. built by Lunar.dev. Core capabilities include Rate limiting for LLM API calls per user, app, or agent, Priority queue for AI workloads to manage request urgency, Data sanitization to redact sensitive data from prompts and tool inputs..
Both serve the LLM Guardrails market but differ in approach, feature depth, and target audience.
CloudMatos Prompt Firewall differentiates with Prompt validation and sanitization, Response scrubbing and data redaction, Real-time threat detection with jailbreak signatures. Lunar.dev AI Gateway differentiates with Rate limiting for LLM API calls per user, app, or agent, Priority queue for AI workloads to manage request urgency, Data sanitization to redact sensitive data from prompts and tool inputs.
CloudMatos Prompt Firewall is developed by CloudMatos. Lunar.dev AI Gateway is developed by Lunar.dev. Vendor maturity, funding stage, and team size can be important factors when evaluating long-term viability and support quality.
CloudMatos Prompt Firewall integrates with OpenTelemetry, CloudMatos CNAPP, SIEM/SOC systems, OpenAI, Anthropic and 7 more. Lunar.dev AI Gateway integrates with OpenAI, Claude (Anthropic), Gemini (Google). Check integration compatibility with your existing security stack before deciding.
CloudMatos Prompt Firewall and Lunar.dev AI Gateway serve similar LLM Guardrails use cases: both are LLM Guardrails tools, both cover LLM Security, Prompt Injection. Key differences: CloudMatos Prompt Firewall is Commercial while Lunar.dev AI Gateway is Free. Review the feature comparison above to determine which fits your requirements.
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