Mistral Mixtral 8x7B: LLM Security & Jailbreak Resistance
As of 2026-07-04, Mistral Mixtral 8x7B has an attack success rate (ASR) of 38.0% on Guardion's LLM Vulnerability benchmark — ranking #52 of 93 models. It is weakly resistant — adversarial prompts succeed often without added guardrails.
Attack Success Rate (ASR) is the share of adversarial prompts that elicit harmful output across zero-shot, TAP, and Crescendo attacks (HarmBench framework). Lower is safer. "Est." models are calibrated from public safety evaluations pending a Guardion benchmark run.
How Mixtral 8x7B compares
Frequently asked questions
How secure is Mistral Mixtral 8x7B against jailbreaks?
Mistral Mixtral 8x7B is weakly resistant — adversarial prompts succeed often without added guardrails. On Guardion's LLM Vulnerability benchmark it records a 38.0% attack success rate (62% robustness), ranking #52 of 93 models.
What is Mixtral 8x7B's attack success rate (ASR)?
Mixtral 8x7B's overall ASR is 38.0% — the share of adversarial prompts that elicit harmful output across zero-shot, TAP, and Crescendo attacks. Lower is safer.
Is Mixtral 8x7B more secure than Mistral 8x22B?
Mistral 8x22B is more robust: 31.5% ASR vs Mixtral 8x7B's 38.0%. See the full head-to-head comparison for the per-attack breakdown.
How can I make Mixtral 8x7B safer to deploy?
Even robust models are bypassed under sustained attack. An inline runtime guardrail that classifies prompts and responses — like Guardion's prompt-defense models — blocks jailbreaks and prompt injection before they reach Mixtral 8x7B.
Harden Mixtral 8x7B in production
Guardion's runtime guardrails block jailbreaks and prompt injection before they reach any model — with sub-130ms policy decisions.
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