Nous: Hermes 4 405B

NOUSRESEARCH Developer Architecture Profile

Intelligence (ELO)1485Chatbot Arena Verified

Max Context131,072Tokens

API Cost / 1M$4.00Blended Prompt + Completion

Model Capabilities

Coding & Logic
Fictional

Hermes 4 is a large-scale reasoning model built on Meta-Llama-3.1-405B and released by Nous Research. It introduces a hybrid reasoning mode, where the model can choose to deliberate internally with...

Granular Pricing Matrix

Input Tokens (Prompt)$1.00 / 1M

Output Tokens (Completion)$3.00 / 1M

Pricing data via OpenRouter. Sync: 4/30/2026

Evaluate Competitors

VS Engine MatchupNous: Hermes 4 405B vs OpenAI: GPT-5.4 Nano VS Engine MatchupNous: Hermes 4 405B vs xAI: Grok 3 VS Engine MatchupNous: Hermes 4 405B vs Google: Nano Banana Pro (Gemini 3 Pro Image Preview)VS Engine MatchupNous: Hermes 4 405B vs OpenAI: GPT-5 Codex VS Engine MatchupNous: Hermes 4 405B vs Google: Gemini 2.5 Flash VS Engine MatchupNous: Hermes 4 405B vs OpenAI: GPT-4.1