本地模型能否替代 Jev 做提示注入拦截：718 条实测

Juraj Bednar🏴💛🌘 @jurbed原推发布于 2026.10.01

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Can a local model replace a cloud Jev as a prompt-injection gate for my AI agent? I benchmarked the new decision models in Ollama 0.35 on 718 test items. Nimble 9B came closest: it caught 81% of attacks (Jev on Venice: 89%) and it's the best local model I've tested. But it blocks only 63% of instructions planted in ordinary emails, against Jev's 92%. I'm keeping Jev for now. If you want nothing to leave your machine, Nimble is now one config line in the hermes-firewall plugin (~11 GB RAM). https://juraj.bednar.io/en/blog-en/2026/09/28/a-prompt-injection-gate-for-my-ai-agent-what-worked-what-didnt-and-the-benchmark/#local-models