Hermes 3 405B is the first full-parameter fine-tune of Meta's Llama 3.1 405B, Nous Research's largest Hermes 3 model, with a 131,072 token context window. The model brings advanced agentic capabilities, reliable function calling, and structured outputs, combined with much improved roleplaying, reasoning, and multi-turn conversation coherence over long contexts. Training emphasized high-quality instruction data designed to make the model follow system prompts adaptively and precisely. Nous Research positions Hermes 3 405B as competitive, if not superior, to Llama 3.1 Instruct on general capabilities, while unlocking stronger steerability toward individual alignment preferences. This model targets developers building sophisticated multi-agent systems, complex reasoning pipelines, and applications requiring deep context coherence. It uses the ChatML prompt format and works with OpenAI-compatible serving stacks such as vLLM and SGLang.
Hermes 3 Llama 3.1 405B runs on 1 route through the qynio gateway. Compare residency, zero retention, and training posture at a glance — full data-handling detail per route below.
| Provider | Region | Zero data retention | Training | Input | Output |
|---|---|---|---|---|---|
| US | Zero data retention | No | $1.00 | $1.00 |
Hermes 3 Llama 3.1 405B runs on a single route through the qynio gateway today, so its availability is that provider's availability.
Name a second model in the same request and the gateway tries it on retriable errors, so a busy hour never has to reach your users. .
Measured over the last 30 days from each provider's official status feed via StatusGator. Refreshed hourly. See uptime for every provider qynio monitors.
Each route hosting Hermes 3 Llama 3.1 405B has its own privacy posture, residency, and no-KYC terms. Postures are maintained by qynio with a last-verification timestamp.
Zero data retention is on by default on Pay-as-you-go — no action required. No training on customer data. US; unknown; deposit available.
Call Hermes 3 Llama 3.1 405B through the qynio gateway with one API key. Let your coding agent set it up, or call it directly — qynio is drop-in compatible with the OpenAI, Anthropic, and Google AI SDKs.
Copy this and paste it into a coding agent like Claude Code, Cursor or Codex and it'll wire up qynio for you.
import OpenAI from "openai";const client = new OpenAI({apiKey: process.env.QYN_API_KEY,baseURL: "https://api.qyn.io/v3/compat",});const completion = await client.chat.completions.create({model: "deepinfra/NousResearch/Hermes-3-Llama-3.1-405B",messages: [{ role: "user", content: "Hello" }],});console.log(completion.choices[0].message.content);
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