Nous Research just dropped Hermes 4, a new frontier in open-weight AI models. It’s a hybrid “reasoning model” that toggles between fast responses and deep thought using a simple <think> tag. With 50x more training data than its predecessor and a built-in anti-sycophancy bias, Hermes 4 is blunt, steerable, and creatively aligned with users—not corporate ethics.
Nous Research
Nous Research27 août 2025
Nous Research presents Hermes 4, our latest line of hybrid reasoning models. Hermes 4 builds on our legacy of user-aligned models with expanded test-time compute capabilities. Special attention was given to making the models creative and interesting to interact with, unencumbered by censorship, and neutrally aligned while maintaining state of the art level math, coding, and reasoning performance for open weight models.
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