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arxiv:2508.18255

Hermes 4 Technical Report

Published on Aug 25
· Submitted by sumuks on Aug 26
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Abstract

Hermes 4, a hybrid reasoning model, integrates structured multi-turn reasoning with broad instruction-following, evaluated across various benchmarks including math, coding, knowledge, comprehension, and alignment.

AI-generated summary

We present Hermes 4, a family of hybrid reasoning models that combine structured, multi-turn reasoning with broad instruction-following ability. We describe the challenges encountered during data curation, synthesis, training, and evaluation, and outline the solutions employed to address these challenges at scale. We comprehensively evaluate across mathematical reasoning, coding, knowledge, comprehension, and alignment benchmarks, and we report both quantitative performance and qualitative behavioral analysis. To support open research, all model weights are published publicly at https://huggingface.co/collections/NousResearch/hermes-4-collection-68a731bfd452e20816725728

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