Hermes 3 Llama 3.1 405b

Hermes the listed price Llama 3.1 405B represents a frontier-level full-parameter finetune of the Llama 3.1 405B foundation model, a departure from lightweight adapter-based approaches. The model is designed with a core philosophy of aligning language models closely to user intent while providing powerful steering capabilities and granular control. It uses ChatML as its prompt format, enabling a structured system for multi-turn conversational engagement. The design intent centers on advanced roleplaying, complex reasoning, and agentic task execution, with particular strength in maintaining coherence across extended contexts and managing nuanced multi-turn dialogues.

Built upon the capabilities established in Hermes 2, this iteration expands significantly across agentic functions, roleplaying fidelity, and general assistant performance. The training approach—a full-parameter finetune at the 405B scale—enables robust function calling and structured output generation, along with improved code synthesis. Benchmarks position the model competitively alongside Llama 3.1 Instruct models, with particular advantages in tasks requiring sustained reasoning and tool use. As an open-weights model, it provides researchers and developers direct access to modify and deploy the model for diverse applications ranging from conversational agents to autonomous task completion pipelines.