Mistral Large 4 Trails DeepSeek V4.1 Flash in Coding Benchmarks, Though Some Losses Were Test Errors

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An independent evaluation tested Mistral Large 4, released as a Public Preview in October, against DeepSeek V4.1 Flash on two agentic coding benchmarks. Mistral Large 4 scored 0.5462 on the Gauntlet, placing 28th of 44, while DeepSeek V4.1 Flash scored 0.6957 there and finished faster and cheaper. On the Forge 2.0 task, Mistral's two builds scored 0.1086 and 0.3304, compared with 0.2422 and 0.6618 for DeepSeek. The author attributes part of the Gauntlet shortfall to a bug in the author's own scorer and notes that some Forge losses came from the model's own throttling behavior. The results reflect a single run per benchmark in one specific setup, and the vendor has warned the preview model may change without notice.

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