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Nous: Hermes 3 405B Instruct

NOUSRESEARCH Developer Architecture Profile

Intelligence (ELO)1300Chatbot Arena Verified
Max Context131,072Tokens
API Cost / 1M$2.00Blended Prompt + Completion

Model Capabilities

  • Coding & Logic
  • Roleplay
  • Fictional
  • Classification
  • Conversational
Hermes 3 is a generalist language model with many improvements over Hermes 2, including advanced agentic capabilities, much better roleplaying, reasoning, multi-turn conversation, long context coherence, and improvements across the board. Hermes 3 405B is a frontier-level, full-parameter finetune of the Llama-3.1 405B foundation model, focused on aligning LLMs to the user, with powerful steering capabilities and control given to the end user. The Hermes 3 series builds and expands on the Hermes 2 set of capabilities, including more powerful and reliable function calling and structured output capabilities, generalist assistant capabilities, and improved code generation skills. Hermes 3 is competitive, if not superior, to Llama-3.1 Instruct models at general capabilities, with varying strengths and weaknesses attributable between the two.

Granular Pricing Matrix

Input Tokens (Prompt)$1.00 / 1M
Output Tokens (Completion)$1.00 / 1M

Pricing data via OpenRouter. Sync: 3/16/2026

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