Hermes-3-Llama-3.1-405B

Hermes 3 is a cutting-edge language model that offers advanced capabilities in roleplaying, reasoning, and conversation. It's a fine-tuned version of the Llama-3.1 405B foundation model, designed to align with user needs and provide powerful control. Key features include reliable function calling, structured output, generalist assistant capabilities, and improved code generation. Hermes 3 is competitive with Llama-3.1 Instruct models, with its own strengths and weaknesses.

Context
131K
Input price
$1/1M tokens
Output price
$1/1M tokens

Capabilities

Output Control
Structured Output
JSON Mode
Infrastructure
Streaming

Details

Model IDNousResearch/Hermes-3-Llama-3.1-405B
Provider DeepInfra
Creator nousresearch
Familyllama-3.1
License—
Statusactive
Typechat
Input modalitiestext
Output modalitiestext
Open weightYes
Parameters—
Architecture—
Context window131K tokens
Max input—
Max output—
Reasoning tokens—
Knowledge cutoff—
Release date
Sourceofficial

Endpoints

Chat CompletionsPOST
Generate chat responses with messageshttps://api.deepinfra.com/v1/openai/v1/chat/completions

Pricing

Input
$1
Output
$1
Cache write
—
Cache read
—
Batch in
—
Batch out
—

Family Comparison: llama-3.1

ModelContextMax outPricing
Hermes-3-Llama-3.1-70B131K—$0.7$0.7
Hermes-3-Llama-3.1-405B131K—$1$1

API

GET/v1/models/deepinfra/NousResearch/Hermes-3-Llama-3.1-405B

Hermes-3-Llama-3.1-405B

NousResearch/Hermes-3-Llama-3.1-405B

Hermes 3 is a cutting-edge language model that offers advanced capabilities in roleplaying, reasoning, and conversation. It's a fine-tuned version of the Llama-3.1 405B foundation model, designed to align with user needs and provide powerful control. Key features include reliable function calling, structured output, generalist assistant capabilities, and improved code generation. Hermes 3 is competitive with Llama-3.1 Instruct models, with its own strengths and weaknesses.

Changes · 1 entries
NousResearch/Hermes-3-Llama-3.1-405Bcreate3e56cf1Apr 26, 2026, 07:23 PM