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Nous: Hermes 4 70B

nousresearch/hermes-4-70b
Aug 26, 2025131.1K context$0.13/M in · $0.40/M outReasoning

Description

Hermes 4 70B is a hybrid reasoning model from Nous Research, built on Meta-Llama-3.1-70B. It introduces the same hybrid mode as the larger 405B release, allowing the model to either respond directly or generate explicit <think>...</think> reasoning traces before answering. Users can control the reasoning behaviour with the reasoning enabled boolean. Learn more in our docs

This 70B variant is trained with the expanded post-training corpus (~60B tokens) emphasizing verified reasoning data, leading to improvements in mathematics, coding, STEM, logic, and structured outputs while maintaining general assistant performance. It supports JSON mode, schema adherence, function calling, and tool use, and is designed for greater steerability with reduced refusal rates.

Specifications

Provider
nousresearch
Context Length
131.1K
Max Output
Modality
Intext
Outtext

Pricing

TypePrice / 1M tokens
Input$0.13
Output$0.40

Quick Start

curl https://api.ominigate.ai/v1/chat/completions \
  -H "Authorization: Bearer sk-omg-your-api-key" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "nousresearch/hermes-4-70b",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'
Nous: Hermes 4 70B — Pricing & API on OminiGate