Does Hermes 3 Llama 3.1 405B support zero data retention?

Yes. Hermes 3 Llama 3.1 405B is available with zero data retention on DeepInfra through the Opper gateway.

Where is Hermes 3 Llama 3.1 405B hosted?

Hermes 3 Llama 3.1 405B runs on US hosting routes through the Opper gateway.

Is Hermes 3 Llama 3.1 405B trained on prompts and outputs?

No. Every hosting route for Hermes 3 Llama 3.1 405B is configured so customer prompts and outputs are not used to train models by default.

Is a GDPR DPA available for Hermes 3 Llama 3.1 405B?

Yes. A GDPR Data Processing Agreement is available on at least one route serving Hermes 3 Llama 3.1 405B. Contact hello@opper.ai to receive it.

Hermes 3 Llama 3.1 405B

by Nous Research

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.

Call Hermes 3 Llama 3.1 405B on Opper with the OpenAI SDK. Sign up without a credit card. Get started

Get your API key Try in chat Compare

Key info

Input

Output

Features

Context window

131K

Max output

131K

Input price

$1.00 /1M

Output price

$1.00 /1M

US residency available
Zero data retention on pay-as-you-go
No training by default
GDPR DPA available

Available routes

Hermes 3 Llama 3.1 405B runs on 1 route through the Opper gateway. Compare residency, zero data retention and training posture at a glance, with full data-handling detail per route below.

Provider	Region	Zero data retention	Training	Input	Output	Cache read
DeepInfra	US		No	$1.00	$1.00	Input price

Uptime and availability

Hermes 3 Llama 3.1 405B runs on a single route through the Opper gateway today, so its availability is that provider's availability.

100%route uptime, last 30 days

Single route, no failover target within this model.

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. Set up a fallback chain.

Measured over the last 30 days from each provider's official status feed via StatusGator. Refreshed hourly. See uptime for every provider Opper monitors.

Data handling per route

Each route hosting Hermes 3 Llama 3.1 405B has its own privacy posture, residency, and GDPR terms. Postures are maintained by Opper with a last-verification timestamp.

DeepInfra — United States🇺🇸

Zero data retention: nothing is logged, held for abuse monitoring or used for training. No training on customer data. US; unknown; DPA available.

Zero data retention: Yes. Nothing is logged, held for abuse monitoring or used for training.
Training: No training on customer data.
Logging: None
Abuse monitoring: No classifier
GDPR DPA: DPA available
Transfer mechanism: unknown

Get started

Call Hermes 3 Llama 3.1 405B through the Opper gateway with one API key. Opper is drop-in compatible with the OpenAI, Anthropic and Google AI SDKs.

Hermes 3 Llama 3.1 405B is a premium model on Opper. Sign up needs no credit card: you get an API key straight away and the free models work in the playground and the API. Add a card to use premium models, pay-as-you-go with no minimum.

Set it up with your agent

Copy this and paste it into a coding agent like Claude Code, Cursor or Codex and it'll wire up Opper for you.

Or call it directly

1import OpenAI from "openai";
2
3const client = new OpenAI({
4  apiKey: process.env.OPPER_API_KEY,
5  baseURL: "https://api.opper.ai/v3/compat",
6});
7
8const completion = await client.chat.completions.create({
9  model: "deepinfra/NousResearch/Hermes-3-Llama-3.1-405B",
10  messages: [{ role: "user", content: "Hello" }],
11});
12console.log(completion.choices[0].message.content);