Hermes 3 Llama 3.1 70B

by Nous Research

All Nous Research releases

Hermes 3 70B is a fine-tune of Llama 3.1 70B that delivers Nous Research's agentic capabilities at a more deployable scale than the 405B model. With a 131,072 token context window, it supports extended multi-turn conversations and long-form reasoning while keeping strong function calling and structured output support for tool-use applications. Built through fine-tuning on high-quality instruction data, Hermes 3 70B is positioned as competitive, if not superior, to Llama 3.1 Instruct on general tasks, with particular gains in roleplaying, multi-turn dialogue coherence, and reasoning. The model uses the ChatML prompt format and supports function calling within assistant turns. This model suits teams balancing capability against compute cost, especially for agentic systems, content generation that needs consistency over long contexts, and reasoning workloads where 70B parameters are sufficient. It works with common OpenAI-compatible serving stacks including vLLM and SGLang.

Call Hermes 3 Llama 3.1 70B on Opper with the OpenAI SDK. Sign up without a credit card. Get started

Key info

Input
Output
Features
Context window
131K
Max output
131K
Input price
$0.70 /1M
Output price
$0.70 /1M
Released
  • 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 70B 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.

ProviderRegionZero data retentionTrainingInputOutputCache read
USNo$0.70$0.70Input price

Uptime and availability

Hermes 3 Llama 3.1 70B 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 70B 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

Benchmarks

Independent benchmark scores — composite indices for reasoning, coding, and math, plus individual eval scores where available.

Intelligence Index6.0
Reasoning & knowledge
MMLU-Pro
57%
GPQA Diamond
40%
Humanity's Last Exam
4%
Coding
LiveCodeBench
19%

Get started

Call Hermes 3 Llama 3.1 70B 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 70B 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

import OpenAI from "openai";
const client = new OpenAI({
apiKey: process.env.OPPER_API_KEY,
baseURL: "https://api.opper.ai/v3/compat",
});
const completion = await client.chat.completions.create({
model: "deepinfra/NousResearch/Hermes-3-Llama-3.1-70B",
messages: [{ role: "user", content: "Hello" }],
});
console.log(completion.choices[0].message.content);

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