OpenHermes 2.5
by Nous Research · open-source · Last verified 2026-03-17
A large curated synthetic instruction dataset with ~1 million entries sourced from multiple high-quality open datasets including Airoboros, Camel, GPT4-LLM, and others. OpenHermes 2.5 powers the Nous Hermes model family and is widely regarded as one of the best open instruction datasets.
https://huggingface.co/datasets/teknium/OpenHermes-2.5 ↗B
B—Above Average
Adoption: AQuality: AFreshness: B+Citations: B+Engagement: F
Specifications
- License
- Apache-2.0
- Pricing
- open-source
- Capabilities
- instruction-tuning, supervised-fine-tuning, multi-task
- Integrations
- huggingface-datasets
- Use Cases
- fine-tuning, instruction-following, reasoning
- API Available
- No
- Tags
- synthetic, gpt-4, instruction-following, diverse, high-quality
- Added
- 2026-03-17
- Completeness
- 100%
Index Score
68.7Adoption
81
Quality
85
Freshness
72
Citations
77
Engagement
0
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