Hermes 3
Overview
Open-source AI model with advanced reasoning, multi-turn conversation, and roleplaying capabilities.
Best For Professions:
Hermes 3 is an open-source AI model developed by Nous Research, based on Meta's Llama 3.1 architecture. It features advanced long-term context retention, multi-turn conversation management, and enhanced roleplaying abilities. Fine-tuned on a dataset of primarily synthetic responses, Hermes 3 excels in reasoning, creativity, and adaptability to user prompts. The model is available in various parameter sizes, including 8B, 70B, and 405B, catering to diverse application needs.
Product overview
Capabilities, pricing and fit
Hermes 3 is best understood as a fine-tuned language model rather than an agent-development framework. Nous Research presents Hermes 3 as a Llama 3.1 fine-tune with long-context conversation, roleplaying, and agentic function-calling capabilities.
Information as of July 30, 2026
What it can do
- Agent application development
Nous Research presents Hermes 3 as a Llama 3.1 fine-tune with long-context conversation, roleplaying, and agentic function-calling capabilities.[1]
Where it fits best
- Evaluating an open model for conversational or tool-calling workflows.[1]
Sources (1)
- Hermes 3 - NOUS RESEARCHOfficial site · checked 2026-07-30
Autonomy level
86/100
Our subjective rating of how independently the product carries out its documented tasks, considering the human setup, input, approval and review it needs. This is not a measured success rate.
Comparisons
Custom Comparisons
Some of the use cases of Hermes 3:
- Developers seeking an open-source AI model for advanced reasoning tasks.
- Researchers interested in multi-turn conversational AI and roleplaying applications.
- Organizations aiming to implement customizable AI solutions with enhanced context retention.
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Popularity level: 69%
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