Nous-Hermes-2-Yi-34B

Advanced Chat Model by Nous Research

What is Nous-Hermes-2-Yi-34B?

Nous-Hermes-2-Yi-34B is a powerful, instruction-tuned 34B parameter language model fine-tuned by Nous Research on the Yi-34B base model. Using Direct Preference Optimization (DPO), it delivers high performance in dialogue, reasoning, summarization, and multi-turn chat.

Trained on top-quality synthetic and instruction data, it rivals larger proprietary models in output quality while remaining fully open and adaptable for commercial or research use.

Key Features of Nous-Hermes-2-Yi-34B

34B Dense Transformer

Offers top-tier reasoning and chat capabilities at a manageable compute scale.

Trained with Direct Preference Optimization

Aligned using DPO on curated high-quality datasets for more helpful and safe responses.

ChatML Format for Richer Dialogue

Supports multi-turn, system-user formatting for dynamic, context-aware interactions.

Fully Open-Weight Model

Downloadable and deployable with no restrictions—ideal for enterprise, academic, or private use.

Optimized for Fast Inference

Compatible with popular frameworks like vLLM, Hugging Face Transformers, and GGUF.

Customizable for Any Domain

Fine-tune for healthcare, education, law, finance, or creative industries with domain-specific datasets.

Use Cases of Nous-Hermes-2-Yi-34B

Deploy high-performance assistants for HR, IT support, policy navigation, or internal QA.

Use in R&D workflows to summarize papers, generate hypotheses, or explain complex material.

Create interactive tutoring systems that are helpful, reliable, and domain-aware.

Build aligned, auditable assistants in environments demanding transparency and safety.

Use the robust Yi-34B base to fine-tune for specific languages or knowledge bases.

Nous-Hermes-2-Yi-34B

vs

Other 30B+ Models

Feature	Nous-Hermes-2-Yi-34B	Yi-34B	Mixtral-8x7B	GPT-4
Parameters	34B	34B	12.9B × 8 (MoE)	~175B
Open Weights	✅	✅	✅	❌
DPO Fine-Tuning	✅	❌	❌	✅ (RLHF)
Chat Format Support	✅ ChatML	❌	⚠️ Limited	✅
Best Use Case	High-End Chat	Base Pretrain	Light NLP Apps	General Tasks
License	Open	Community	Apache 2.0	Proprietary