{"slug":"llama-guard","name":"Llama Guard","domain":"llama.com","verdict":"As of 2026-07-13, ChatGPT, Claude, Gemini, Grok collectively rank Llama Guard #5 of 9 for llm guardrails tool (one of 3 leaderboards it appears on). Source: https://modelsagree.com/product/llama-guard (modelsagree.com, CC BY 4.0).","best_rank":5,"categories":3,"brief":{"category":"best-llm-guardrails-tool","title":"Best LLM guardrails tool","rank":5,"of":9,"top":"NVIDIA NeMo Guardrails","day":"2026-07-19","why":[{"t":"Open-weight safety classifier","m":["Gemini","Claude"],"q":"The de-facto open-weights safety classifier"},{"t":"Self-hostable and fine-tunable custom taxonomy","m":["Gemini","Claude"],"q":"free, self-hostable, fine-tunable to a custom taxonomy"},{"t":"Local auditing and policy customization","m":["Gemini","Claude"],"q":"allowing full local auditing and policy customization"},{"t":"Building block inside other frameworks","m":["Claude"],"q":"the common building block inside other frameworks"}],"gap":[{"t":"Programmable input, output, dialog, retrieval rails","m":["Claude","ChatGPT"],"q":"programmable input, output, dialog, and retrieval rails in one runtime"},{"t":"Complex multi-turn state machines","m":["Gemini"],"q":"enforce complex, multi-turn state machines"},{"t":"Tool execution and hallucination mitigation","m":["Grok","ChatGPT"],"q":"tool execution rails, topic control, jailbreak prevention, hallucination mitigation"}],"fix":[{"t":"No policy engine, logging, or dashboards","m":["Claude"],"q":"no policy engine, logging, or dashboards"},{"t":"Build all orchestration yourself","m":["Claude"],"q":"you build all orchestration yourself and pay GPU serving costs"},{"t":"High compute overhead and latency","m":["Claude","Gemini"],"q":"High compute overhead and latency, requiring dedicated GPU hosting"}]},"entries":[{"slug":"best-llm-guardrails-tool","title":"Best LLM guardrails tool","rank":5,"of":9,"score":3,"appearances":2,"modelRanks":{"Claude":5,"Gemini":4},"reason":"Standard open-weight classifier model trained specifically on robust hazard taxonomies, allowing full local auditing and policy customization.","reasons":[{"model":"Gemini","reason":"Standard open-weight classifier model trained specifically on robust hazard taxonomies, allowing full local auditing and policy customization."},{"model":"Claude","reason":"The de-facto open-weights safety classifier (Llama Guard 3/4 plus Prompt Guard for injection) — free, self-hostable, fine-tunable to a custom taxonomy, multimodal in its latest version, and the common building block inside other frameworks; the right pick for teams with GPU capacity and data-residency constraints."}],"fixes":[{"model":"Claude","fix":"It is a model, not a product — no policy engine, logging, or dashboards, so you build all orchestration yourself and pay GPU serving costs, with known gaps on non-English and novel attack styles."},{"model":"Gemini","fix":"High compute overhead and latency, requiring dedicated GPU hosting to run inference on every user input and model output."}],"updated":"2026-07-13","rank_history":{"days":["2026-06-29","2026-06-30","2026-07-08","2026-07-09","2026-07-10","2026-07-12","2026-07-13"],"ranks":[6,7,5,6,null,6,5]},"api":"https://modelsagree.com/api/v1/best/best-llm-guardrails-tool.json"},{"slug":"best-llm-security-tool","title":"Best LLM security tool","rank":8,"of":10,"score":2,"appearances":1,"modelRanks":{"Gemini":4},"reason":"A highly performant, open-weights model-based safety classification layer (like Llama Guard 3) that is pre-tuned specifically for classifying input/output risks against standard taxonomies. Runs natively on your own hosting infrastructure, serving as an excellent starting point for basic prompt moderation.","reasons":[{"model":"Gemini","reason":"A highly performant, open-weights model-based safety classification layer (like Llama Guard 3) that is pre-tuned specifically for classifying input/output risks against standard taxonomies. Runs natively on your own hosting infrastructure, serving as an excellent starting point for basic prompt moderation."}],"fixes":[{"model":"Gemini","fix":"Adds significant compute footprint and operational costs because it requires hosting and running a separate neural network instance, while providing limited native support for data sanitization."}],"updated":"2026-07-14","rank_history":{"days":["2026-07-13","2026-07-14"],"ranks":[null,8]},"api":"https://modelsagree.com/api/v1/best/best-llm-security-tool.json"},{"slug":"best-ai-agent-security-platform","title":"Best AI agent security platform","rank":11,"of":11,"score":1,"appearances":1,"modelRanks":{"Grok":5},"reason":"High-performance open-source safety classifier (input/output) with tool call abuse detection, multilingual support, and integration into broader ecosystems; excellent merit for cost-effective, customizable baseline protection against core threats.","reasons":[{"model":"Grok","reason":"High-performance open-source safety classifier (input/output) with tool call abuse detection, multilingual support, and integration into broader ecosystems; excellent merit for cost-effective, customizable baseline protection against core threats."}],"fixes":[{"model":"Grok","fix":"Primarily a model/classifier (needs orchestration); not a full platform for complex agent flows or runtime monitoring."}],"updated":"2026-07-15","api":"https://modelsagree.com/api/v1/best/best-ai-agent-security-platform.json"}],"page":"https://modelsagree.com/product/llama-guard","check":"https://modelsagree.com/check?q=Llama%20Guard","updated":"2026-08-10T18:18:45.051Z","attribution":"modelsagree.com, CC BY 4.0"}