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Nous: Hermes 4 70B

by Nous

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](https://openrouter.ai/docs/use-cases/reasoning-tokens#enable-reasoning-with-default-config) 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.

Avg Score

0.0%

0 answers

Avg Latency

0ms

0 runs

Pricing

$0.11

input

/

$0.38

output

per 1M tokens

Context

131K

tokens

Alternatives

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Other Models from Nous

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ModelScoreLatencyCost/1M
Nous: Hermes 4 405B——$2.00
Nous: DeepHermes 3 Mistral 24B Preview——$0.06
Nous: Hermes 3 70B Instruct——$0.30
Nous: Hermes 3 405B Instruct——$0.0000
Nous: Hermes 3 405B Instruct——$1.00
NousResearch: Hermes 2 Pro - Llama-3 8B——$0.05

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Quickstart

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View on OpenRouter
import { OpenRouter } from "@openrouter/sdk";

const openrouter = new OpenRouter({
  apiKey: "<OPENROUTER_API_KEY>"
});

const completion = await openrouter.chat.completions.create({
  model: "nousresearch/hermes-4-70b",
  messages: [
    {
      role: "user",
      content: "Hello!"
    }
  ]
});

console.log(completion.choices[0].message.content);

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