Hermes Models by Nous Research
Last refreshed 2026-04-19. Next refresh: weekly.
Details
Capabilities
About
The Hermes family of Large Language Models (LLMs), crafted by Nous Research, is based on Meta's Llama 3.1 framework. These models are noted for their high level of steerability and customization, setting them apart from many proprietary counterparts. Available in model sizes ranging from 8 billion to 405 billion parameters, the Hermes LLMs possess advanced agentic capabilities, impressive role-playing skills, and enhanced reasoning and creativity. The latest iteration, Hermes 3, stands out for its unique behavior, sometimes showing "existential crises" during certain interactions. This feature highlights the intricate nature of modern AI models as they scale. As open-source models available on Hugging Face, Hermes LLMs are accessible for community-driven adjustments, promoting powerful AI tools aligned with user needs without corporate limitations.
Decision facts
- Best fit
- structured outputscodingagent workflows
- Capability starting point
- Nous Hermes Llama 2 13B with structured outputs
- Lowest tracked input
- Nous Hermes Llama 2 13B · $0.1/1M · Replicate API
- Closest related family
- MOSS-Audio
Current Variants
Use-when guidance is based on each model's tracked capabilities, context window, release date, and replacement status.
Use when the workload needs 13B parameters and structured outputs.
Use when the workload needs 7B parameters and structured outputs.
| Model | Use when | Released | Signals | Status |
|---|---|---|---|---|
| Nous Hermes Llama 2 13B | Use when the workload needs 13B parameters and structured outputs. | 2023-12 | 13B parametersstructured outputs | Current |
| Nous Hermes Llama 2 70B | Use when the workload needs 70B parameters. | 2023-12 | 70B parameters | Current |
| Nous Hermes Llama 2 7B | Use when the workload needs 7B parameters and structured outputs. | 2023-12 | 7B parametersstructured outputs | Current |
| Nous Hermes 13B | Use when the workload needs 13B parameters. | 2023-12 | 13B parameters | Current |
Release Timeline
1 release groupSpecifications(4 models)
| Model | Released | Parameters | Structured Outputs |
|---|---|---|---|
| Nous Hermes Llama 2 13B | 2023-12 | 13B | Yes |
| Nous Hermes Llama 2 70B | 2023-12 | 70B | No |
| Nous Hermes Llama 2 7B | 2023-12 | 7B | Yes |
| Nous Hermes 13B | 2023-12 | 13B | No |
Available From(4 providers)
Pricing
| Model | Provider | Input / 1M | Output / 1M | Type |
|---|---|---|---|---|
| Nous Hermes Llama 2 13B | Replicate API | $0.1 | $0.5 | Serverless |
| Nous Hermes 13B | Lepton AI API | $0.13 | $0.13 | Serverless |
| Nous Hermes Llama 2 7B | Together AI | $0.2 | $0.2 | Serverless |
| Nous Hermes Llama 2 13B | Fireworks AI | $0.2 | $0.2 | Provisioned |
| Nous Hermes Llama 2 7B | Fireworks AI | $0.2 | $0.2 | Provisioned |
| Nous Hermes Llama 2 13B | Together AI | $0.3 | $0.3 | Serverless |
| Nous Hermes Llama 2 70B | Fireworks AI | $0.9 | $0.9 | Provisioned |
