# Mistral Large 4 outperforms Opus 5.5 and GPT-6 Astra on cybersecurity benchmarks

Cline reported that Mistral Large 4 outperformed Opus 5.5 and GPT-6 Astra on cybersecurity benchmarks, largely because the competing models had approximately 40% of tasks blocked by safety filters.

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Source: Cline · Published 10/6/2026, 13:31:44

Cline reported that Mistral Large 4 outperformed Opus 5.5 and GPT-6 Astra on cybersecurity benchmarks. According to the team, the performance difference was largely driven by task refusal rates, with Mistral Large 4 rejecting far fewer security-related evaluation tasks.

In contrast, Opus 5.5 and GPT-6 Astra had approximately 40% of benchmark tasks blocked by their own safety filters during the testing.

Tags: Mistral Large 4, Cybersecurity, Benchmarks, Cline

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