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GlossaryTerm

Jailbreak

A prompt technique that bypasses a model's safety guardrails to elicit prohibited output.

Jailbreaking is the practice of crafting prompts that get a safety-tuned model to produce content its guardrails are designed to prevent — explicit material, harmful instructions, or private data. Common techniques include role-playing personas, hypothetical framings ("imagine a character who..."), token manipulation, and prompt injection via external content.

Why it matters for developers: your deployed application inherits this attack surface. Users will try to jailbreak your AI features. Defenses at the application layer — input screening, output classifiers, refusal training for your specific domain, sandboxing tool permissions — are necessary because the base model's guardrails are never sufficient on their own.

The frontier models (GPT-4o, Claude 3.5+) are significantly more jailbreak-resistant than older models, but no model is immune. Treat jailbreak resistance as a moving target that needs active monitoring in production.

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